     1→import pytest
     2→from pydantic import ValidationError
     3→
     4→from mirage.types import (BackendType, CommandResult, CommandStats,
     5→                          FilePayload, FileStat, Inode, RemoteCommandOptions,
     6→                          SyncResult, TransferStats)
     7→
     8→
     9→def test_filestat_defaults():
    10→    fs = FileStat(name="foo.txt")

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import pytest
from pydantic import ValidationError

from mirage.types import (BackendType, CommandResult, CommandStats,
                          FilePayload, FileStat, Inode, RemoteCommandOptions,
                          SyncResult, TransferStats)

def test_filestat_defaults():
    fs = FileStat(name="foo.txt")


Edit

from mirage.types import (BackendType, CommandResult, CommandStats,
                          FilePayload, FileStat, Inode, RemoteCommandOptions,
                          SyncResult, TransferStats)

from mirage.server.service.session import CommandStats
from mirage.types import (BackendType, CommandResult, FilePayload, FileStat,
                          Inode, RemoteCommandOptions, SyncResult,
                          TransferStats)


The file /Users/agent/strukto/mirage/tests/test_types.py has been updated successfully.

from mirage.server.service.session import CommandStats
from mirage.types import (BackendType, CommandResult, FilePayload, FileStat,
                          Inode, RemoteCommandOptions, SyncResult,
                          TransferStats)

import pytest
from pydantic import ValidationError

from mirage.types import (BackendType, CommandResult, CommandStats,
                          FilePayload, FileStat, Inode, RemoteCommandOptions,
                          SyncResult, TransferStats)

def test_filestat_defaults():
    fs = FileStat(name="foo.txt")
    assert fs.name == "foo.txt"
    assert fs.size is None
    assert fs.extra == {}

def test_filestat_immutable():
    fs = FileStat(name="foo.txt")
    with pytest.raises(ValidationError):
        fs.name = "bar.txt"

def test_inode_defaults():
    inode = Inode(virtual_path="/a/b.txt", backend_mount="/a/")
    assert inode.dirty is False
    assert inode.checksum is None

def test_inode_mutable():
    inode = Inode(virtual_path="/a/b.txt", backend_mount="/a/")
    inode.dirty = True
    assert inode.dirty is True

def test_syncresult_fields():
    r = SyncResult(path="/a/b.txt", op="create", status="ok")
    assert r.op == "create"
    assert r.duration_ms == 0

def test_syncresult_immutable():
    r = SyncResult(path="/a/b.txt", op="create", status="ok")
    with pytest.raises(ValidationError):
        r.status = "error"

def test_transferstats_mutable():
    ts = TransferStats()
    ts.bytes_read += 100
    assert ts.bytes_read == 100

def test_commandstats_defaults():
    cs = CommandStats()
    assert cs.total_commands == 0
    assert cs.command_counts == {}

def test_command_result_defaults():
    r = CommandResult(stdout="hello")
    assert r.stdout == "hello"
    assert r.output_files == {}

def test_command_result_with_files():
    r = CommandResult(stdout="done", output_files={"/out.csv": b"a,b"})
    assert r.output_files["/out.csv"] == b"a,b"

def test_file_payload_with_data():
    p = FilePayload(checksum="abc123", data=b"hello")
    assert p.checksum == "abc123"
    assert p.data == b"hello"

def test_file_payload_checksum_only():
    p = FilePayload(checksum="abc123")
    assert p.data is None

def test_remote_command_options_defaults():
    opts = RemoteCommandOptions()
    assert opts.max_file_size == "100MB"
    assert opts.cache == "enabled"

def test_remote_command_options_custom():
    opts = RemoteCommandOptions(max_file_size="500MB", cache="disabled")
    assert opts.max_file_size == "500MB"
    assert opts.cache == "disabled"

def test_remote_command_options_only_two_fields():
    opts = RemoteCommandOptions()
    assert opts.max_file_size == "100MB"
    assert opts.cache == "enabled"
    assert set(RemoteCommandOptions.model_fields.keys()) == {
        "max_file_size", "cache"
    }

def test_backend_type_values():
    assert BackendType.MEMORY == "memory"
    assert BackendType.LOCAL == "local"
    assert BackendType.S3 == "s3"
    assert BackendType.R2 == "r2"
    assert BackendType.HTTP == "http"
    assert BackendType.HTTPS == "https"

def test_backend_type_string_equality():
    assert BackendType.MEMORY.value == "memory"
    assert BackendType.LOCAL.value == "local"
    assert BackendType.S3.value == "s3"
    assert BackendType.R2.value == "r2"
    assert BackendType.HTTP.value == "http"
    assert BackendType.HTTPS.value == "https"
    assert BackendType("memory") is BackendType.MEMORY
    assert BackendType("s3") is BackendType.S3

def test_backend_type_members():
    assert set(BackendType) == {
        BackendType.MEMORY,
        BackendType.LOCAL,
        BackendType.S3,
        BackendType.R2,
        BackendType.HTTP,
        BackendType.HTTPS,
    }

-from mirage.types import (BackendType, CommandResult, CommandStats,

-                          FilePayload, FileStat, Inode, RemoteCommandOptions,

-                          SyncResult, TransferStats)

+from mirage.server.service.session import CommandStats

+from mirage.types import (BackendType, CommandResult, FilePayload, FileStat,

+                          Inode, RemoteCommandOptions, SyncResult,

+                          TransferStats)


from mirage.types import CommandStats, MountMode

from mirage.server.service.session import CommandStats
from mirage.types import MountMode


<tool_use_error>File has not been read yet. Read it first before writing to it.</tool_use_error>

Error: File has not been read yet. Read it first before writing to it.


     1→from dataclasses import dataclass, field
     2→
     3→from mirage.backend.local.memory import MemoryBackend
     4→from mirage.commands import COMMANDS
     5→from mirage.commands.custom.registry import CommandRegistry
     6→from mirage.observe import inspector
     7→from mirage.types import CommandStats, MountMode
     8→from mirage.workspace import SyncPolicy, Workspace
     9→
    10→
    11→@dataclass
    12→class _FakeSession:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

from dataclasses import dataclass, field

from mirage.backend.local.memory import MemoryBackend
from mirage.commands import COMMANDS
from mirage.commands.custom.registry import CommandRegistry
from mirage.observe import inspector
from mirage.types import CommandStats, MountMode
from mirage.workspace import SyncPolicy, Workspace

@dataclass
class _FakeSession:


from mirage.types import CommandStats, MountMode

from mirage.server.service.session import CommandStats
from mirage.types import MountMode


The file /Users/agent/strukto/mirage/tests/observe/test_inspector.py has been updated successfully.

from mirage.server.service.session import CommandStats
from mirage.types import MountMode

from dataclasses import dataclass, field

from mirage.backend.local.memory import MemoryBackend
from mirage.commands import COMMANDS
from mirage.commands.custom.registry import CommandRegistry
from mirage.observe import inspector
from mirage.types import CommandStats, MountMode
from mirage.workspace import SyncPolicy, Workspace

@dataclass
class _FakeSession:
    id: str = "test-ws"
    ws: Workspace | None = None
    registry: CommandRegistry | None = None
    cwd: str = "/"
    fuse_mounted: bool = False
    mode: str = "write"
    mountpoint: str | None = None
    pid: int | None = None
    mounts: list[dict] = field(default_factory=list)
    command_stats: CommandStats = field(default_factory=CommandStats)

def _make_session() -> _FakeSession:
    ws = Workspace(
        {"/tmp/": MemoryBackend()},
        mode=MountMode.WRITE,
        sync_policy=SyncPolicy.STAGED,
    )
    return _FakeSession(ws=ws, registry=CommandRegistry())

def test_global_status():
    session = _make_session()
    sessions = {"ws1": session}
    result = inspector.global_status(sessions)
    assert "rss_bytes" in result
    assert result["total_sessions"] == 1
    assert result["total_cache_bytes"] == 0
    assert "uptime_seconds" in result

def test_list_sessions():
    session = _make_session()
    sessions = {"ws1": session}
    result = inspector.list_sessions(sessions)
    assert len(result) == 1
    assert result[0]["id"] == "test-ws"
    assert result[0]["cache_used"] == 0
    assert result[0]["total_commands"] == 0

def test_workspace_status():
    session = _make_session()
    session.command_stats.total_commands = 5
    session.command_stats.total_errors = 1
    session.command_stats.last_command = "cat /tmp/test"
    result = inspector.workspace_status(session)
    assert result["cache_used"] == 0
    assert result["dirty_inodes"] == 0
    assert result["total_commands"] == 5
    assert result["total_errors"] == 1
    assert result["last_command"] == "cat /tmp/test"
    assert len(result["backends"]) == 1
    assert result["backends"][0]["backend"] == "MemoryBackend"

def test_workspace_commands():
    session = _make_session()
    result = inspector.workspace_commands(session)
    names = {c["name"] for c in result}
    assert "cat" in names
    assert "ls" in names
    assert "grep" in names
    assert len(result) >= len(COMMANDS)
    for cmd in result:
        assert "source" in cmd
        assert "cost_level" in cmd

def test_workspace_memory():
    session = _make_session()
    session.ws.write("/tmp/hello.txt", b"hello world")
    result = inspector.workspace_memory(session)
    assert result["cache"]["used"] > 0
    assert result["cache"]["entry_count"] == 1
    assert "/tmp/hello.txt" in result["cache"]["entries"]
    assert result["dirty_tracker"]["total_inodes"] == 1
    assert "/tmp/hello.txt" in result["dirty_tracker"]["dirty_paths"]
    assert "/tmp/" in result["backend_memory"]
    assert result["backend_memory"]["/tmp/"]["file_count"] == 0

def test_workspace_memory_with_synced_file():
    ws = Workspace(
        {"/tmp/": MemoryBackend()},
        mode=MountMode.WRITE,
        sync_policy=SyncPolicy.IMMEDIATE,
    )
    session = _FakeSession(ws=ws, registry=CommandRegistry())
    ws.write("/tmp/hello.txt", b"hello")
    result = inspector.workspace_memory(session)
    assert result["backend_memory"]["/tmp/"]["file_count"] == 1

def test_workspace_transfers():
    session = _make_session()
    session.ws.write("/tmp/a.txt", b"data")
    session.ws.cat("/tmp/a.txt")
    session.ws.cat("/tmp/a.txt")
    result = inspector.workspace_transfers(session)
    assert "/tmp/" in result
    stats = result["/tmp/"]
    assert stats["write_ops"] >= 1
    assert stats["read_ops"] >= 2
    assert stats["bytes_read"] > 0
    assert stats["cache_hit_rate"] > 0

-from mirage.types import CommandStats, MountMode


TodoWrite

Move SyncPolicy to workspace/sync.py and update all import sites

Move CommandStats to server/service/session.py and update import sites

Remove dead Workspace._created_at field

Verify all tests pass


Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Move SyncPolicy to workspace/sync.py and update all import sites

Move CommandStats to server/service/session.py and update import sites

Remove dead Workspace._created_at field

Verify all tests pass

Remove dead Workspace._created_at field

Verify all tests pass


**Task 3: Remove `Workspace._created_at`:**


Edit

        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.time()

        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}


    57→        self._registry = MountRegistry()
    58→        self._cache = LRUCache(cache_limit)
    59→        self._tracker = DirtyTracker()
    60→        self._sync_policy = sync_policy
    61→        self._ttl_seconds = ttl_seconds
    62→        self._locked_paths: set[str] = set()
    63→        self._transfer_stats: dict[str, TransferStats] = {}
    64→        self._created_at: float = time.time()
    65→
    66→        for prefix, value in backends.items():
    67→            if isinstance(value, tuple) and len(value) == 3:
    68→                backend, mount_mode, mount_consistency = value

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

        self._registry = MountRegistry()
        self._cache = LRUCache(cache_limit)
        self._tracker = DirtyTracker()
        self._sync_policy = sync_policy
        self._ttl_seconds = ttl_seconds
        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.time()

        for prefix, value in backends.items():
            if isinstance(value, tuple) and len(value) == 3:
                backend, mount_mode, mount_consistency = value


        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.time()

        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}


The file /Users/agent/strukto/mirage/mirage/workspace/workspace.py has been updated successfully.

from __future__ import annotations

import time

from mirage.backend.base import BaseBackend
from mirage.backend.filetype import guess_type
from mirage.types import (FileStat, Inode, MountMode, SyncResult, TransferStats)
from mirage.workspace.cache import LRUCache
from mirage.workspace.consistency import ConsistencyPolicy, is_fresh
from mirage.workspace.mount import MountRegistry
from mirage.workspace.sync import DirtyTracker, SyncPolicy

class _PathLock:

    def __init__(self, ws: Workspace, paths: list[str]) -> None:
        self._ws = ws
        self._paths = paths

    def __enter__(self) -> _PathLock:
        return self

    def __exit__(self, *_: object) -> None:
        self._ws.unlock_paths(self._paths)

class Workspace:
    """
    Unified virtual filesystem over heterogeneous backends.

    Mounts backends at virtual path prefixes and provides a command-level API
    (cat, ls, write, cp, mv, rm, ...) with transparent caching
    and write staging.

    Example::

        ws = Workspace(
            {"/data/": S3Backend(S3Config(bucket="my-bucket")),
             "/tmp/":  MemoryBackend()},
            cache_limit="256MB",
            sync_policy=SyncPolicy.STAGED,
        )
        content = ws.cat("/data/reports/q1.json")
        ws.write("/tmp/summary.txt", b"hello")
        ws.sync()
    """

    def __init__(
        self,
        backends: dict[str, BaseBackend | tuple],
        cache_limit: str | int = "512MB",
        sync_policy: SyncPolicy = SyncPolicy.STAGED,
        mode: MountMode = MountMode.READ,
        consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED,
        ttl_seconds: int = 300,
    ) -> None:
        self._registry = MountRegistry()
        self._cache = LRUCache(cache_limit)
        self._tracker = DirtyTracker()
        self._sync_policy = sync_policy
        self._ttl_seconds = ttl_seconds
        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.time()

        for prefix, value in backends.items():
            if isinstance(value, tuple) and len(value) == 3:
                backend, mount_mode, mount_consistency = value
            elif isinstance(value, tuple):
                backend, mount_mode = value
                mount_consistency = consistency
            else:
                backend = value
                mount_mode = mode
                mount_consistency = consistency
            self._registry.mount(prefix, backend, mount_mode,
                                 mount_consistency)

    # ── mount management ────────────────────────────────────────────────────

    def mount(
            self,
            prefix: str,
            backend: BaseBackend,
            mode: MountMode = MountMode.READ,
            consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED) -> None:
        self._registry.mount(prefix, backend, mode, consistency)

    def backend(self, path: str) -> BaseBackend:
        backend, _, _ = self._registry.resolve(path)
        return backend

    # ── read ops ────────────────────────────────────────────────────────────

    def cat(self, path: str) -> bytes:
        inode = self._tracker.get(path)
        if inode and inode.dirty:
            entry = self._cache.get(path)
            if entry is not None:
                self._record_transfer(path,
                                      "read",
                                      len(entry.data),
                                      0,
                                      cache_hit=True)
                return entry.data

        entry = self._cache.get(path)
        remote_stat = None
        if entry is not None:
            consistency = self._registry.mount_for(path).consistency
            backend, bp, _ = self._registry.resolve(path)
            fresh, remote_stat = is_fresh(entry, consistency,
                                          self._ttl_seconds, backend, bp)
            if fresh:
                self._record_transfer(path,
                                      "read",
                                      len(entry.data),
                                      0,
                                      cache_hit=True)
                return entry.data
        else:
            backend, bp, _ = self._registry.resolve(path)

        t0 = time.monotonic()
        data = backend.cat(bp)
        duration_ms = int((time.monotonic() - t0) * 1000)
        self._record_transfer(path,
                              "read",
                              len(data),
                              duration_ms,
                              cache_hit=False)
        if remote_stat is None:
            remote_stat = backend.stat(bp)
        self._cache.put(path,
                        data,
                        etag=remote_stat.extra.get("etag"),
                        modified=remote_stat.modified,
                        size=remote_stat.size)
        self._tracker.on_read(path, data, self._mount_prefix(path))
        return data

    def ls(self, path: str) -> list[str]:
        backend, bp, _ = self._registry.resolve(path)
        prefix = self._mount_prefix(path).rstrip("/")
        backend_ok = False
        try:
            backend_entries = backend.ls(bp)
            backend_ok = True
        except FileNotFoundError:
            backend_entries = []
        result: set[str] = {
            prefix + "/" + e.lstrip("/")
            for e in backend_entries
        }
        norm_path = "/" + path.strip("/")
        dir_prefix = norm_path.rstrip("/") + "/"
        has_staged_children = False
        for inode in self._tracker.dirty():
            vp = inode.virtual_path
            if not vp.startswith(dir_prefix):
                continue
            if inode.checksum is None:
                result.discard(vp)
                continue
            has_staged_children = True
            remainder = vp[len(dir_prefix):]
            first = remainder.split("/")[0]
            if not first:
                continue
            if "/" in remainder:
                result.add(dir_prefix + first + "/")
            else:
                result.add(dir_prefix + first)
        if not backend_ok and not has_staged_children:
            raise FileNotFoundError(path)
        return sorted(result)

    def ls_l(self, path: str) -> list[FileStat]:
        backend, bp, _ = self._registry.resolve(path)
        return backend.ls_l(bp)

    def stat(self, path: str) -> FileStat:
        inode = self._tracker.get(path)
        if inode and inode.dirty and inode.checksum is not None:
            entry = self._cache.get(path)
            size = len(entry.data) if entry is not None else inode.size
            return FileStat(
                name=path.rstrip("/").rsplit("/", 1)[-1],
                size=size,
                type=guess_type(path),
            )
        backend, bp, _ = self._registry.resolve(path)
        return backend.stat(bp)

    def exists(self, path: str) -> bool:
        try:
            self.stat(path)
            return True
        except (FileNotFoundError, ValueError):
            return False

    def head(self, path: str, lines: int = 10) -> bytes:
        backend, bp, _ = self._registry.resolve(path)
        return backend.head(bp, lines)

    def tail(self, path: str, lines: int = 10) -> bytes:
        backend, bp, _ = self._registry.resolve(path)
        return backend.tail(bp, lines)

    def read(self, path: str, offset: int, size: int) -> bytes:
        inode = self._tracker.get(path)
        if inode and inode.dirty:
            entry = self._cache.get(path)
            if entry is not None:
                return entry.data[offset:offset + size]

        entry = self._cache.get(path)
        remote_stat = None
        if entry is not None:
            consistency = self._registry.mount_for(path).consistency
            backend, bp, _ = self._registry.resolve(path)
            fresh, remote_stat = is_fresh(entry, consistency,
                                          self._ttl_seconds, backend, bp)
            if fresh:
                return entry.data[offset:offset + size]
        else:
            backend, bp, _ = self._registry.resolve(path)

        data = backend.cat(bp)
        if remote_stat is None:
            remote_stat = backend.stat(bp)
        self._cache.put(path,
                        data,
                        etag=remote_stat.extra.get("etag"),
                        modified=remote_stat.modified,
                        size=remote_stat.size)
        self._tracker.on_read(path, data, self._mount_prefix(path))
        return data[offset:offset + size]

    def grep(self, pattern: str, path: str) -> list[str]:
        backend, bp, _ = self._registry.resolve(path)
        return backend.grep(pattern, bp)

    # ── write ops ───────────────────────────────────────────────────────────

    def write(self, path: str, data: bytes) -> None:
        self._assert_not_locked(path)
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        self._cache.put(path, data)
        self._tracker.on_write(path, data, self._mount_prefix(path))
        self._record_transfer(path, "write", len(data), 0)
        if self._sync_policy == SyncPolicy.IMMEDIATE:
            backend.put(bp, data)
            self._tracker.on_read(path, data, self._mount_prefix(path))

    def mkdir(self, path: str) -> None:
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        backend.mkdir(bp)

    def rm(self, path: str) -> None:
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        inode = self._tracker.get(path)
        staged_only = inode and inode.dirty and inode.remote_checksum is None
        if not staged_only:
            backend.unlink(bp)
        self._cache.invalidate(path)
        self._tracker.on_delete(path)

    def mv(self, src: str, dst: str) -> None:
        self._assert_writable(src)
        sb, sbp, _ = self._registry.resolve(src)
        db, dbp, _ = self._registry.resolve(dst)
        src_inode = self._tracker.get(src)
        staged_only = (src_inode and src_inode.dirty
                       and src_inode.remote_checksum is None)
        if staged_only:
            entry = self._cache.get(src)
            data = entry.data if entry else b""
            self._cache.put(dst, data)
            self._tracker.on_write(dst, data, self._mount_prefix(dst))
            self._cache.invalidate(src)
            self._tracker.on_delete(src)
        elif sb is db:
            sb.rename(sbp, dbp)
            self._cache.invalidate(src)
        else:
            data = sb.cat(sbp)
            db.put(dbp, data)
            sb.unlink(sbp)
            self._cache.invalidate(src)

    def cp(self, src: str, dst: str) -> None:
        self._assert_writable(dst)
        data = self.cat(src)
        db, dbp, _ = self._registry.resolve(dst)
        db.put(dbp, data)

    # ── sync lifecycle ──────────────────────────────────────────────────────

    def sync(self, path: str | None = None) -> list[SyncResult]:
        results: list[SyncResult] = []
        targets = [
            i for i in self._tracker.dirty()
            if path is None or i.virtual_path == path
        ]
        for inode in targets:
            backend, bp, _ = self._registry.resolve(inode.virtual_path)
            entry = self._cache.get(inode.virtual_path)
            data = entry.data if entry else None
            result = self._tracker.on_sync(inode.virtual_path, bp, data,
                                           backend)
            results.append(result)
        return results

    def status(self) -> list[Inode]:
        return self._tracker.status()

    def reset(self) -> None:
        self._tracker.reset()
        self._cache.clear()

    # ── path locking ─────────────────────────────────────────────────────────

    def _lock_path(self, path: str) -> None:
        self._locked_paths.add(path)

    def unlock_paths(self, paths: list[str]) -> None:
        for p in paths:
            self._locked_paths.discard(p)

    def lock_paths(self, paths: list[str]) -> _PathLock:
        for p in paths:
            self._lock_path(p)
        return _PathLock(self, paths)

    def _assert_not_locked(self, path: str) -> None:
        if path in self._locked_paths:
            raise PermissionError(
                f"path {path!r} is locked by remote execution")

    # ── helpers ─────────────────────────────────────────────────────────────

    def _mount_prefix(self, path: str) -> str:
        norm = "/" + path.strip("/")
        for m in self._registry.mounts():
            if norm == m.prefix.rstrip("/") or norm.startswith(m.prefix):
                return m.prefix
        return "/"

    def _assert_writable(self, path: str) -> None:
        _, _, mode = self._registry.resolve(path)
        if mode == MountMode.READ:
            raise PermissionError(f"mount at {path!r} is read-only")

    def _record_transfer(self,
                         path: str,
                         op: str,
                         nbytes: int,
                         duration_ms: int,
                         cache_hit: bool | None = None) -> None:
        prefix = self._mount_prefix(path)
        if prefix not in self._transfer_stats:
            self._transfer_stats[prefix] = TransferStats()
        stats = self._transfer_stats[prefix]
        if op == "read":
            stats.bytes_read += nbytes
            stats.read_ops += 1
            stats.total_read_ms += duration_ms
            if cache_hit is True:
                stats.cache_hits += 1
            elif cache_hit is False:
                stats.cache_misses += 1
        elif op == "write":
            stats.bytes_written += nbytes
            stats.write_ops += 1
            stats.total_write_ms += duration_ms

-        self._created_at: float = time.time()


Check if `time` is still used in `workspace.py`:


123:        t0 = time.monotonic()
125:        duration_ms = int((time.monotonic() - t0) * 1000)


Good, `time` is still used. Now verify everything:


Bash

uv run pytest --no-cov -q 2>&1 | tail -3

Run full test suite


........................................................................ [ 87%]
........................................................................ [ 98%]
.........                                                                [100%]


Get final count


656 passed, 1 skipped in 2.16s


TodoWrite

Move SyncPolicy to workspace/sync.py and update all import sites

Move CommandStats to server/service/session.py and update import sites

Remove dead Workspace._created_at field

Verify all tests pass


Remove dead Workspace._created_at field

Verify all tests pass

Remove dead Workspace._created_at field

Verify all tests pass


All done. 656 passed, 1 skipped.

Summary of changes:
- **`SyncPolicy`** → `mirage/workspace/sync.py`, re-exported from `mirage/workspace/__init__.py`. Updated 12 import sites.
- **`CommandStats`** → `mirage/server/service/session.py`. Updated 2 import sites.
- **`Workspace._created_at`** — removed (dead field).
- **`mirage/types.py`** is now 35 lines shorter, containing only truly shared primitives: `FileType`, `CostLevel`, `FileStat`, `MountMode`, `RuntimeType`, `BackendType`, `Inode`, `SyncResult`, `TransferStats`, `FilePayload`, `RemoteCommandOptions`, `CommandResult`.


In /Users/agent/strukto/mirage/, find all usages of `SyncPolicy` and `CommandStats` across the codebase.

For each, I need:
1. Every file that imports it (grep for `SyncPolicy` and `CommandStats`)
2. Every file that uses it (how it's used, not just imported)
3. The full definition in mirage/types.py

Also read:
- mirage/types.py (full file)
- mirage/workspace/sync.py (full file)

Report file paths and line numbers for all occurrences.

Prompt:
In /Users/agent/strukto/mirage/, find all usages of `SyncPolicy` and `CommandStats` across the codebase.

For each, I need:
1. Every file that imports it (grep for `SyncPolicy` and `CommandStats`)
2. Every file that uses it (how it's used, not just imported)
3. The full definition in mirage/types.py

Also read:
- mirage/types.py (full file)
- mirage/workspace/sync.py (full file)

Report file paths and line numbers for all occurrences.


     1→from enum import Enum
     2→
     3→from pydantic import BaseModel, ConfigDict, Field
     4→
     5→
     6→class FileType(str, Enum):
     7→    DIRECTORY = "directory"
     8→    TEXT = "text"
     9→    BINARY = "binary"
    10→    JSON = "json"
    11→    CSV = "csv"
    12→    IMAGE_PNG = "image/png"
    13→    IMAGE_JPEG = "image/jpeg"
    14→    IMAGE_GIF = "image/gif"
    15→    ZIP = "application/zip"
    16→    GZIP = "application/gzip"
    17→    PDF = "application/pdf"
    18→
    19→
    20→class CostLevel(str, Enum):
    21→    CHEAP = "cheap"
    22→    PARTIAL = "partial"
    23→    EXPENSIVE = "expensive"
    24→    NETWORK = "network"
    25→
    26→
    27→class FileStat(BaseModel):
    28→    model_config = ConfigDict(frozen=True)
    29→
    30→    name: str
    31→    size: int | None = None
    32→    modified: str | None = None
    33→    type: FileType | None = None
    34→    extra: dict = Field(default_factory=dict)
    35→
    36→
    37→class SyncPolicy(str, Enum):
    38→    STAGED = "staged"
    39→    IMMEDIATE = "immediate"
    40→    MANUAL = "manual"
    41→
    42→
    43→class MountMode(str, Enum):
    44→    READ = "read"
    45→    WRITE = "write"
    46→    EXEC = "exec"
    47→
    48→
    49→class RuntimeType(str, Enum):
    50→    MEMORY = "memory"
    51→    LOCAL = "local"
    52→    REMOTE = "remote"
    53→
    54→
    55→class BackendType(str, Enum):
    56→    MEMORY = "memory"
    57→    LOCAL = "local"
    58→    S3 = "s3"
    59→    R2 = "r2"
    60→    HTTP = "http"
    61→    HTTPS = "https"
    62→
    63→
    64→class Inode(BaseModel):
    65→    virtual_path: str
    66→    backend_mount: str
    67→    checksum: str | None = None
    68→    size: int | None = None
    69→    remote_checksum: str | None = None
    70→    dirty: bool = False
    71→
    72→
    73→class SyncResult(BaseModel):
    74→    model_config = ConfigDict(frozen=True)
    75→
    76→    path: str
    77→    op: str
    78→    status: str
    79→    remote: str | None = None
    80→    bytes: int | None = None
    81→    duration_ms: int = 0
    82→    error: str | None = None
    83→
    84→
    85→class TransferStats(BaseModel):
    86→    bytes_read: int = 0
    87→    bytes_written: int = 0
    88→    read_ops: int = 0
    89→    write_ops: int = 0
    90→    cache_hits: int = 0
    91→    cache_misses: int = 0
    92→    total_read_ms: int = 0
    93→    total_write_ms: int = 0
    94→
    95→
    96→class CommandStats(BaseModel):
    97→    total_commands: int = 0
    98→    total_errors: int = 0
    99→    last_command: str = ""
   100→    last_timestamp: str = ""
   101→    command_counts: dict[str, int] = Field(default_factory=dict)
   102→
   103→
   104→class FilePayload(BaseModel):
   105→    checksum: str
   106→    data: bytes | None = None
   107→
   108→
   109→class RemoteCommandOptions(BaseModel):
   110→    max_file_size: str = "100MB"
   111→    cache: str = "enabled"
   112→
   113→
   114→class CommandResult(BaseModel):
   115→    model_config = ConfigDict(arbitrary_types_allowed=True)
   116→
   117→    stdout: str = ""
   118→    output_files: dict[str, bytes] = {}
   119→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→import hashlib
     2→import time
     3→
     4→from mirage.backend.base import BaseBackend
     5→from mirage.types import Inode, SyncResult
     6→
     7→
     8→class DirtyTracker:
     9→    """
    10→    Tracks which virtual paths have local changes that haven't been synced
    11→    to their backing backend.
    12→
    13→    Lifecycle:
    14→        on_read()  — record baseline remote checksum (not dirty)
    15→        on_write() — update local checksum, mark dirty=True
    16→        on_sync()  — upload to backend, clear dirty flag
    17→    """
    18→
    19→    def __init__(self) -> None:
    20→        self._inodes: dict[str, Inode] = {}
    21→
    22→    # ── event hooks ─────────────────────────────────────────────────────────
    23→
    24→    def on_read(self, path: str, data: bytes, mount: str) -> None:
    25→        checksum = _md5(data)
    26→        if path in self._inodes:
    27→            inode = self._inodes[path]
    28→            inode.remote_checksum = checksum
    29→            inode.checksum = checksum
    30→            inode.size = len(data)
    31→            inode.dirty = False
    32→        else:
    33→            self._inodes[path] = Inode(
    34→                virtual_path=path,
    35→                backend_mount=mount,
    36→                checksum=checksum,
    37→                size=len(data),
    38→                remote_checksum=checksum,
    39→                dirty=False,
    40→            )
    41→
    42→    def on_write(self, path: str, data: bytes, mount: str) -> None:
    43→        checksum = _md5(data)
    44→        if path in self._inodes:
    45→            inode = self._inodes[path]
    46→            inode.checksum = checksum
    47→            inode.size = len(data)
    48→            inode.dirty = True
    49→        else:
    50→            self._inodes[path] = Inode(
    51→                virtual_path=path,
    52→                backend_mount=mount,
    53→                checksum=checksum,
    54→                size=len(data),
    55→                remote_checksum=None,
    56→                dirty=True,
    57→            )
    58→
    59→    def on_delete(self, path: str) -> None:
    60→        if path in self._inodes:
    61→            self._inodes[path].dirty = True
    62→            self._inodes[path].checksum = None
    63→            self._inodes[path].size = None
    64→
    65→    def on_sync(self, virtual_path: str, backend_path: str, data: bytes | None,
    66→                backend: BaseBackend) -> SyncResult:
    67→        """
    68→        Upload `data` to backend at `backend_path`. Pass None for deletions.
    69→        `virtual_path` tracks the inode; `backend_path` goes to the backend.
    70→        Returns a SyncResult describing the outcome.
    71→        """
    72→        inode = self._inodes.get(virtual_path)
    73→        op = "delete" if data is None else ("create" if (
    74→            inode and inode.remote_checksum is None) else "modify")
    75→        t0 = time.monotonic()
    76→        try:
    77→            if data is None:
    78→                backend.unlink(backend_path)
    79→            else:
    80→                backend.put(backend_path, data)
    81→            duration_ms = int((time.monotonic() - t0) * 1000)
    82→            checksum = _md5(data) if data is not None else None
    83→            if inode:
    84→                inode.remote_checksum = checksum
    85→                inode.dirty = False
    86→            return SyncResult(path=virtual_path,
    87→                              op=op,
    88→                              status="ok",
    89→                              bytes=len(data) if data else None,
    90→                              duration_ms=duration_ms)
    91→        except Exception as exc:
    92→            duration_ms = int((time.monotonic() - t0) * 1000)
    93→            return SyncResult(path=virtual_path,
    94→                              op=op,
    95→                              status="error",
    96→                              duration_ms=duration_ms,
    97→                              error=str(exc))
    98→
    99→    # ── queries ─────────────────────────────────────────────────────────────
   100→
   101→    def dirty(self) -> list[Inode]:
   102→        return [i for i in self._inodes.values() if i.dirty]
   103→
   104→    def status(self) -> list[Inode]:
   105→        return list(self._inodes.values())
   106→
   107→    def get(self, path: str) -> Inode | None:
   108→        return self._inodes.get(path)
   109→
   110→    def reset(self) -> None:
   111→        self._inodes.clear()
   112→
   113→
   114→def _md5(data: bytes) -> str:
   115→    return hashlib.md5(data).hexdigest()
   116→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


Found 18 files
mirage/workspace/workspace.py
mirage/server/service/local.py
tests/workspace/test_workspace.py
tests/fuse/remote/test_remote.py
tests/runtime/test_base.py
tests/commands/custom/test_arg_resolver.py
tests/commands/builtin/test_read.py
mirage/server/fastapi/config.py
mirage/__init__.py
examples/r2.py
tests/conftest.py
mirage/runtime/remote.py
tests/runtime/test_memory.py
mirage/runtime/local.py
tests/integration/test_remote_transfer.py
tests/observe/test_inspector.py
examples/local.py
examples/memory.py


Found 3 files
mirage/server/service/session.py
tests/test_types.py
tests/observe/test_inspector.py


examples/r2.py:14:from mirage import MountMode, SyncPolicy, Workspace
examples/r2.py:33:    sync_policy=SyncPolicy.IMMEDIATE,
examples/local.py:11:from mirage import LocalBackend, MountMode, SyncPolicy, Workspace
examples/local.py:19:        sync_policy=SyncPolicy.IMMEDIATE,  # writes go to disk immediately
examples/memory.py:8:from mirage import MemoryBackend, MountMode, SyncPolicy, Workspace
examples/memory.py:13:    sync_policy=SyncPolicy.IMMEDIATE,
tests/runtime/test_base.py:5:from mirage.types import MountMode, SyncPolicy
tests/runtime/test_base.py:14:        sync_policy=SyncPolicy.IMMEDIATE,
tests/runtime/test_base.py:73:        sync_policy=SyncPolicy.IMMEDIATE,
tests/integration/test_remote_transfer.py:6:from mirage.types import CommandResult, MountMode, SyncPolicy
tests/integration/test_remote_transfer.py:28:        sync_policy=SyncPolicy.IMMEDIATE,
tests/integration/test_remote_transfer.py:74:        sync_policy=SyncPolicy.IMMEDIATE,
tests/integration/test_remote_transfer.py:96:        sync_policy=SyncPolicy.IMMEDIATE,
tests/integration/test_remote_transfer.py:120:        sync_policy=SyncPolicy.IMMEDIATE,
tests/runtime/test_memory.py:5:from mirage.types import MountMode, SyncPolicy
tests/runtime/test_memory.py:14:        sync_policy=SyncPolicy.IMMEDIATE,
tests/conftest.py:4:from mirage.types import MountMode, SyncPolicy
tests/conftest.py:18:        sync_policy=SyncPolicy.IMMEDIATE,
tests/conftest.py:27:        sync_policy=SyncPolicy.STAGED,
tests/fuse/remote/test_remote.py:5:from mirage.types import MountMode, SyncPolicy
tests/fuse/remote/test_remote.py:15:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/fuse/remote/test_remote.py:44:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/builtin/test_read.py:7:from mirage.types import FileType, MountMode, SyncPolicy
tests/commands/builtin/test_read.py:16:                     sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:6:from mirage.types import MountMode, SyncPolicy
tests/workspace/test_workspace.py:24:def _make_ws(mode=MountMode.WRITE, sync_policy=SyncPolicy.STAGED):
tests/workspace/test_workspace.py:157:    ws, backend = _make_ws(sync_policy=SyncPolicy.STAGED)
tests/workspace/test_workspace.py:165:    ws, backend = _make_ws(sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:194:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:204:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:215:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:227:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:236:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/workspace/test_workspace.py:249:                   sync_policy=SyncPolicy.IMMEDIATE)
mirage/server/service/local.py:19:from mirage.types import (FileStat, MountMode, RuntimeType, SyncPolicy)
mirage/server/service/local.py:69:            sync_policy=SyncPolicy(config.get("sync_policy", "staged")),
mirage/server/fastapi/config.py:3:from mirage.types import MountMode, SyncPolicy
mirage/server/fastapi/config.py:17:    sync_policy: SyncPolicy = SyncPolicy.STAGED
tests/observe/test_inspector.py:7:from mirage.types import CommandStats, MountMode, SyncPolicy
tests/observe/test_inspector.py:29:        sync_policy=SyncPolicy.STAGED,
tests/observe/test_inspector.py:99:        sync_policy=SyncPolicy.IMMEDIATE,
mirage/workspace/workspace.py:7:from mirage.types import (FileStat, Inode, MountMode, SyncPolicy, SyncResult,
mirage/workspace/workspace.py:42:            sync_policy=SyncPolicy.STAGED,
mirage/workspace/workspace.py:53:        sync_policy: SyncPolicy = SyncPolicy.STAGED,
mirage/workspace/workspace.py:254:        if self._sync_policy == SyncPolicy.IMMEDIATE:
mirage/__init__.py:2:from mirage.types import FileStat, Inode, MountMode, SyncPolicy, SyncResult
mirage/__init__.py:14:    "SyncPolicy",
tests/commands/custom/test_arg_resolver.py:3:from mirage.types import MountMode, SyncPolicy
tests/commands/custom/test_arg_resolver.py:10:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_arg_resolver.py:26:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_arg_resolver.py:47:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_arg_resolver.py:69:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_arg_resolver.py:79:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:11:                          SyncPolicy)
tests/commands/custom/test_registry.py:29:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:88:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:180:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:208:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:268:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:288:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:305:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:324:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:356:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:382:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:413:                   sync_policy=SyncPolicy.IMMEDIATE)
tests/commands/custom/test_registry.py:426:                   sync_policy=SyncPolicy.IMMEDIATE)
mirage/runtime/remote.py:11:from mirage.types import MountMode, SyncPolicy
mirage/runtime/remote.py:28:                       sync_policy=SyncPolicy.IMMEDIATE)
mirage/runtime/local.py:4:from mirage.types import MountMode, SyncPolicy
mirage/runtime/local.py:17:                       sync_policy=SyncPolicy.IMMEDIATE)
mirage/types.py:37:class SyncPolicy(str, Enum):


tests/test_types.py:4:from mirage.types import (BackendType, CommandResult, CommandStats,
tests/test_types.py:53:    cs = CommandStats()
mirage/types.py:96:class CommandStats(BaseModel):
tests/observe/test_inspector.py:7:from mirage.types import CommandStats, MountMode, SyncPolicy
tests/observe/test_inspector.py:22:    command_stats: CommandStats = field(default_factory=CommandStats)
mirage/server/service/session.py:11:from mirage.types import CommandStats, MountMode, RuntimeType
mirage/server/service/session.py:29:    command_stats: CommandStats = Field(default_factory=CommandStats)


     1→import os
     2→import signal
     3→import subprocess
     4→import sys
     5→import time
     6→
     7→from pydantic import BaseModel, ConfigDict, Field
     8→
     9→from mirage.commands.custom.registry import CommandRegistry
    10→from mirage.fuse.registry import FuseOpRegistry
    11→from mirage.types import CommandStats, MountMode, RuntimeType
    12→from mirage.workspace import Workspace
    13→
    14→
    15→class WorkspaceSession(BaseModel):
    16→    model_config = ConfigDict(arbitrary_types_allowed=True)
    17→
    18→    id: str
    19→    ws: Workspace | None
    20→    registry: CommandRegistry | None
    21→    cwd: str = "/"
    22→    fuse_mounted: bool = False
    23→    mode: MountMode = MountMode.WRITE
    24→    mountpoint: str | None = None
    25→    pid: int | None = None
    26→    mounts: list[dict] = Field(default_factory=list)
    27→    runtime_type: RuntimeType | None = None
    28→    fuse_registry: FuseOpRegistry = Field(default_factory=FuseOpRegistry)
    29→    command_stats: CommandStats = Field(default_factory=CommandStats)
    30→    created_at: float = Field(default_factory=time.time)
    31→    reported_status: dict | None = None
    32→    reported_transfers: dict | None = None
    33→
    34→
    35→def _unmount_fuse(mountpoint: str, pid: int | None) -> None:
    36→    if sys.platform == "darwin":
    37→        subprocess.run(["diskutil", "unmount", "force", mountpoint],
    38→                       capture_output=True)
    39→    else:
    40→        subprocess.run(["fusermount", "-u", mountpoint], capture_output=True)
    41→    if pid:
    42→        try:
    43→            os.kill(pid, signal.SIGTERM)
    44→        except ProcessLookupError:
    45→            pass
    46→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→from dataclasses import dataclass, field
     2→
     3→from mirage.backend.local.memory import MemoryBackend
     4→from mirage.commands import COMMANDS
     5→from mirage.commands.custom.registry import CommandRegistry
     6→from mirage.observe import inspector
     7→from mirage.types import CommandStats, MountMode, SyncPolicy
     8→from mirage.workspace import Workspace
     9→
    10→
    11→@dataclass
    12→class _FakeSession:
    13→    id: str = "test-ws"
    14→    ws: Workspace | None = None
    15→    registry: CommandRegistry | None = None
    16→    cwd: str = "/"
    17→    fuse_mounted: bool = False
    18→    mode: str = "write"
    19→    mountpoint: str | None = None
    20→    pid: int | None = None
    21→    mounts: list[dict] = field(default_factory=list)
    22→    command_stats: CommandStats = field(default_factory=CommandStats)
    23→
    24→
    25→def _make_session() -> _FakeSession:
    26→    ws = Workspace(
    27→        {"/tmp/": MemoryBackend()},
    28→        mode=MountMode.WRITE,
    29→        sync_policy=SyncPolicy.STAGED,
    30→    )
    31→    return _FakeSession(ws=ws, registry=CommandRegistry())
    32→
    33→
    34→def test_global_status():
    35→    session = _make_session()
    36→    sessions = {"ws1": session}
    37→    result = inspector.global_status(sessions)
    38→    assert "rss_bytes" in result
    39→    assert result["total_sessions"] == 1
    40→    assert result["total_cache_bytes"] == 0
    41→    assert "uptime_seconds" in result
    42→
    43→
    44→def test_list_sessions():
    45→    session = _make_session()
    46→    sessions = {"ws1": session}
    47→    result = inspector.list_sessions(sessions)
    48→    assert len(result) == 1
    49→    assert result[0]["id"] == "test-ws"
    50→    assert result[0]["cache_used"] == 0
    51→    assert result[0]["total_commands"] == 0
    52→
    53→
    54→def test_workspace_status():
    55→    session = _make_session()
    56→    session.command_stats.total_commands = 5
    57→    session.command_stats.total_errors = 1
    58→    session.command_stats.last_command = "cat /tmp/test"
    59→    result = inspector.workspace_status(session)
    60→    assert result["cache_used"] == 0
    61→    assert result["dirty_inodes"] == 0
    62→    assert result["total_commands"] == 5
    63→    assert result["total_errors"] == 1
    64→    assert result["last_command"] == "cat /tmp/test"
    65→    assert len(result["backends"]) == 1
    66→    assert result["backends"][0]["backend"] == "MemoryBackend"
    67→
    68→
    69→def test_workspace_commands():
    70→    session = _make_session()
    71→    result = inspector.workspace_commands(session)
    72→    names = {c["name"] for c in result}
    73→    assert "cat" in names
    74→    assert "ls" in names
    75→    assert "grep" in names
    76→    assert len(result) >= len(COMMANDS)
    77→    for cmd in result:
    78→        assert "source" in cmd
    79→        assert "cost_level" in cmd
    80→
    81→
    82→def test_workspace_memory():
    83→    session = _make_session()
    84→    session.ws.write("/tmp/hello.txt", b"hello world")
    85→    result = inspector.workspace_memory(session)
    86→    assert result["cache"]["used"] > 0
    87→    assert result["cache"]["entry_count"] == 1
    88→    assert "/tmp/hello.txt" in result["cache"]["entries"]
    89→    assert result["dirty_tracker"]["total_inodes"] == 1
    90→    assert "/tmp/hello.txt" in result["dirty_tracker"]["dirty_paths"]
    91→    assert "/tmp/" in result["backend_memory"]
    92→    assert result["backend_memory"]["/tmp/"]["file_count"] == 0
    93→
    94→
    95→def test_workspace_memory_with_synced_file():
    96→    ws = Workspace(
    97→        {"/tmp/": MemoryBackend()},
    98→        mode=MountMode.WRITE,
    99→        sync_policy=SyncPolicy.IMMEDIATE,
   100→    )
   101→    session = _FakeSession(ws=ws, registry=CommandRegistry())
   102→    ws.write("/tmp/hello.txt", b"hello")
   103→    result = inspector.workspace_memory(session)
   104→    assert result["backend_memory"]["/tmp/"]["file_count"] == 1
   105→
   106→
   107→def test_workspace_transfers():
   108→    session = _make_session()
   109→    session.ws.write("/tmp/a.txt", b"data")
   110→    session.ws.cat("/tmp/a.txt")
   111→    session.ws.cat("/tmp/a.txt")
   112→    result = inspector.workspace_transfers(session)
   113→    assert "/tmp/" in result
   114→    stats = result["/tmp/"]
   115→    assert stats["write_ops"] >= 1
   116→    assert stats["read_ops"] >= 2
   117→    assert stats["bytes_read"] > 0
   118→    assert stats["cache_hit_rate"] > 0
   119→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→import pytest
     2→from pydantic import ValidationError
     3→
     4→from mirage.types import (BackendType, CommandResult, CommandStats,
     5→                          FilePayload, FileStat, Inode, RemoteCommandOptions,
     6→                          SyncResult, TransferStats)
     7→
     8→
     9→def test_filestat_defaults():
    10→    fs = FileStat(name="foo.txt")
    11→    assert fs.name == "foo.txt"
    12→    assert fs.size is None
    13→    assert fs.extra == {}
    14→
    15→
    16→def test_filestat_immutable():
    17→    fs = FileStat(name="foo.txt")
    18→    with pytest.raises(ValidationError):
    19→        fs.name = "bar.txt"
    20→
    21→
    22→def test_inode_defaults():
    23→    inode = Inode(virtual_path="/a/b.txt", backend_mount="/a/")
    24→    assert inode.dirty is False
    25→    assert inode.checksum is None
    26→
    27→
    28→def test_inode_mutable():
    29→    inode = Inode(virtual_path="/a/b.txt", backend_mount="/a/")
    30→    inode.dirty = True
    31→    assert inode.dirty is True
    32→
    33→
    34→def test_syncresult_fields():
    35→    r = SyncResult(path="/a/b.txt", op="create", status="ok")
    36→    assert r.op == "create"
    37→    assert r.duration_ms == 0
    38→
    39→
    40→def test_syncresult_immutable():
    41→    r = SyncResult(path="/a/b.txt", op="create", status="ok")
    42→    with pytest.raises(ValidationError):
    43→        r.status = "error"
    44→
    45→
    46→def test_transferstats_mutable():
    47→    ts = TransferStats()
    48→    ts.bytes_read += 100
    49→    assert ts.bytes_read == 100
    50→
    51→
    52→def test_commandstats_defaults():
    53→    cs = CommandStats()
    54→    assert cs.total_commands == 0
    55→    assert cs.command_counts == {}
    56→
    57→
    58→def test_command_result_defaults():
    59→    r = CommandResult(stdout="hello")
    60→    assert r.stdout == "hello"
    61→    assert r.output_files == {}
    62→
    63→
    64→def test_command_result_with_files():
    65→    r = CommandResult(stdout="done", output_files={"/out.csv": b"a,b"})
    66→    assert r.output_files["/out.csv"] == b"a,b"
    67→
    68→
    69→def test_file_payload_with_data():
    70→    p = FilePayload(checksum="abc123", data=b"hello")
    71→    assert p.checksum == "abc123"
    72→    assert p.data == b"hello"
    73→
    74→
    75→def test_file_payload_checksum_only():
    76→    p = FilePayload(checksum="abc123")
    77→    assert p.data is None
    78→
    79→
    80→def test_remote_command_options_defaults():
    81→    opts = RemoteCommandOptions()
    82→    assert opts.max_file_size == "100MB"
    83→    assert opts.cache == "enabled"
    84→
    85→
    86→def test_remote_command_options_custom():
    87→    opts = RemoteCommandOptions(max_file_size="500MB", cache="disabled")
    88→    assert opts.max_file_size == "500MB"
    89→    assert opts.cache == "disabled"
    90→
    91→
    92→def test_remote_command_options_only_two_fields():
    93→    opts = RemoteCommandOptions()
    94→    assert opts.max_file_size == "100MB"
    95→    assert opts.cache == "enabled"
    96→    assert set(RemoteCommandOptions.model_fields.keys()) == {
    97→        "max_file_size", "cache"
    98→    }
    99→
   100→
   101→def test_backend_type_values():
   102→    assert BackendType.MEMORY == "memory"
   103→    assert BackendType.LOCAL == "local"
   104→    assert BackendType.S3 == "s3"
   105→    assert BackendType.R2 == "r2"
   106→    assert BackendType.HTTP == "http"
   107→    assert BackendType.HTTPS == "https"
   108→
   109→
   110→def test_backend_type_string_equality():
   111→    assert BackendType.MEMORY.value == "memory"
   112→    assert BackendType.LOCAL.value == "local"
   113→    assert BackendType.S3.value == "s3"
   114→    assert BackendType.R2.value == "r2"
   115→    assert BackendType.HTTP.value == "http"
   116→    assert BackendType.HTTPS.value == "https"
   117→    assert BackendType("memory") is BackendType.MEMORY
   118→    assert BackendType("s3") is BackendType.S3
   119→
   120→
   121→def test_backend_type_members():
   122→    assert set(BackendType) == {
   123→        BackendType.MEMORY,
   124→        BackendType.LOCAL,
   125→        BackendType.S3,
   126→        BackendType.R2,
   127→        BackendType.HTTP,
   128→        BackendType.HTTPS,
   129→    }
   130→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→from __future__ import annotations
     2→
     3→import time
     4→
     5→from mirage.backend.base import BaseBackend
     6→from mirage.backend.filetype import guess_type
     7→from mirage.types import (FileStat, Inode, MountMode, SyncPolicy, SyncResult,
     8→                          TransferStats)
     9→from mirage.workspace.cache import LRUCache
    10→from mirage.workspace.consistency import ConsistencyPolicy, is_fresh
    11→from mirage.workspace.mount import MountRegistry
    12→from mirage.workspace.sync import DirtyTracker
    13→
    14→
    15→class _PathLock:
    16→
    17→    def __init__(self, ws: Workspace, paths: list[str]) -> None:
    18→        self._ws = ws
    19→        self._paths = paths
    20→
    21→    def __enter__(self) -> _PathLock:
    22→        return self
    23→
    24→    def __exit__(self, *_: object) -> None:
    25→        self._ws.unlock_paths(self._paths)
    26→
    27→
    28→class Workspace:
    29→    """
    30→    Unified virtual filesystem over heterogeneous backends.
    31→
    32→    Mounts backends at virtual path prefixes and provides a command-level API
    33→    (cat, ls, write, cp, mv, rm, ...) with transparent caching
    34→    and write staging.
    35→
    36→    Example::
    37→
    38→        ws = Workspace(
    39→            {"/data/": S3Backend(S3Config(bucket="my-bucket")),
    40→             "/tmp/":  MemoryBackend()},
    41→            cache_limit="256MB",
    42→            sync_policy=SyncPolicy.STAGED,
    43→        )
    44→        content = ws.cat("/data/reports/q1.json")
    45→        ws.write("/tmp/summary.txt", b"hello")
    46→        ws.sync()
    47→    """
    48→
    49→    def __init__(
    50→        self,
    51→        backends: dict[str, BaseBackend | tuple],
    52→        cache_limit: str | int = "512MB",
    53→        sync_policy: SyncPolicy = SyncPolicy.STAGED,
    54→        mode: MountMode = MountMode.READ,
    55→        consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED,
    56→        ttl_seconds: int = 300,
    57→    ) -> None:
    58→        self._registry = MountRegistry()
    59→        self._cache = LRUCache(cache_limit)
    60→        self._tracker = DirtyTracker()
    61→        self._sync_policy = sync_policy
    62→        self._ttl_seconds = ttl_seconds
    63→        self._locked_paths: set[str] = set()
    64→        self._transfer_stats: dict[str, TransferStats] = {}
    65→        self._created_at: float = time.time()
    66→
    67→        for prefix, value in backends.items():
    68→            if isinstance(value, tuple) and len(value) == 3:
    69→                backend, mount_mode, mount_consistency = value
    70→            elif isinstance(value, tuple):
    71→                backend, mount_mode = value
    72→                mount_consistency = consistency
    73→            else:
    74→                backend = value
    75→                mount_mode = mode
    76→                mount_consistency = consistency
    77→            self._registry.mount(prefix, backend, mount_mode,
    78→                                 mount_consistency)
    79→
    80→    # ── mount management ────────────────────────────────────────────────────
    81→
    82→    def mount(
    83→            self,
    84→            prefix: str,
    85→            backend: BaseBackend,
    86→            mode: MountMode = MountMode.READ,
    87→            consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED) -> None:
    88→        self._registry.mount(prefix, backend, mode, consistency)
    89→
    90→    def backend(self, path: str) -> BaseBackend:
    91→        backend, _, _ = self._registry.resolve(path)
    92→        return backend
    93→
    94→    # ── read ops ────────────────────────────────────────────────────────────
    95→
    96→    def cat(self, path: str) -> bytes:
    97→        inode = self._tracker.get(path)
    98→        if inode and inode.dirty:
    99→            entry = self._cache.get(path)
   100→            if entry is not None:
   101→                self._record_transfer(path,
   102→                                      "read",
   103→                                      len(entry.data),
   104→                                      0,
   105→                                      cache_hit=True)
   106→                return entry.data
   107→
   108→        entry = self._cache.get(path)
   109→        remote_stat = None
   110→        if entry is not None:
   111→            consistency = self._registry.mount_for(path).consistency
   112→            backend, bp, _ = self._registry.resolve(path)
   113→            fresh, remote_stat = is_fresh(entry, consistency,
   114→                                          self._ttl_seconds, backend, bp)
   115→            if fresh:
   116→                self._record_transfer(path,
   117→                                      "read",
   118→                                      len(entry.data),
   119→                                      0,
   120→                                      cache_hit=True)
   121→                return entry.data
   122→        else:
   123→            backend, bp, _ = self._registry.resolve(path)
   124→
   125→        t0 = time.monotonic()
   126→        data = backend.cat(bp)
   127→        duration_ms = int((time.monotonic() - t0) * 1000)
   128→        self._record_transfer(path,
   129→                              "read",
   130→                              len(data),
   131→                              duration_ms,
   132→                              cache_hit=False)
   133→        if remote_stat is None:
   134→            remote_stat = backend.stat(bp)
   135→        self._cache.put(path,
   136→                        data,
   137→                        etag=remote_stat.extra.get("etag"),
   138→                        modified=remote_stat.modified,
   139→                        size=remote_stat.size)
   140→        self._tracker.on_read(path, data, self._mount_prefix(path))
   141→        return data
   142→
   143→    def ls(self, path: str) -> list[str]:
   144→        backend, bp, _ = self._registry.resolve(path)
   145→        prefix = self._mount_prefix(path).rstrip("/")
   146→        backend_ok = False
   147→        try:
   148→            backend_entries = backend.ls(bp)
   149→            backend_ok = True
   150→        except FileNotFoundError:
   151→            backend_entries = []
   152→        result: set[str] = {
   153→            prefix + "/" + e.lstrip("/")
   154→            for e in backend_entries
   155→        }
   156→        norm_path = "/" + path.strip("/")
   157→        dir_prefix = norm_path.rstrip("/") + "/"
   158→        has_staged_children = False
   159→        for inode in self._tracker.dirty():
   160→            vp = inode.virtual_path
   161→            if not vp.startswith(dir_prefix):
   162→                continue
   163→            if inode.checksum is None:
   164→                result.discard(vp)
   165→                continue
   166→            has_staged_children = True
   167→            remainder = vp[len(dir_prefix):]
   168→            first = remainder.split("/")[0]
   169→            if not first:
   170→                continue
   171→            if "/" in remainder:
   172→                result.add(dir_prefix + first + "/")
   173→            else:
   174→                result.add(dir_prefix + first)
   175→        if not backend_ok and not has_staged_children:
   176→            raise FileNotFoundError(path)
   177→        return sorted(result)
   178→
   179→    def ls_l(self, path: str) -> list[FileStat]:
   180→        backend, bp, _ = self._registry.resolve(path)
   181→        return backend.ls_l(bp)
   182→
   183→    def stat(self, path: str) -> FileStat:
   184→        inode = self._tracker.get(path)
   185→        if inode and inode.dirty and inode.checksum is not None:
   186→            entry = self._cache.get(path)
   187→            size = len(entry.data) if entry is not None else inode.size
   188→            return FileStat(
   189→                name=path.rstrip("/").rsplit("/", 1)[-1],
   190→                size=size,
   191→                type=guess_type(path),
   192→            )
   193→        backend, bp, _ = self._registry.resolve(path)
   194→        return backend.stat(bp)
   195→
   196→    def exists(self, path: str) -> bool:
   197→        try:
   198→            self.stat(path)
   199→            return True
   200→        except (FileNotFoundError, ValueError):
   201→            return False
   202→
   203→    def head(self, path: str, lines: int = 10) -> bytes:
   204→        backend, bp, _ = self._registry.resolve(path)
   205→        return backend.head(bp, lines)
   206→
   207→    def tail(self, path: str, lines: int = 10) -> bytes:
   208→        backend, bp, _ = self._registry.resolve(path)
   209→        return backend.tail(bp, lines)
   210→
   211→    def read(self, path: str, offset: int, size: int) -> bytes:
   212→        inode = self._tracker.get(path)
   213→        if inode and inode.dirty:
   214→            entry = self._cache.get(path)
   215→            if entry is not None:
   216→                return entry.data[offset:offset + size]
   217→
   218→        entry = self._cache.get(path)
   219→        remote_stat = None
   220→        if entry is not None:
   221→            consistency = self._registry.mount_for(path).consistency
   222→            backend, bp, _ = self._registry.resolve(path)
   223→            fresh, remote_stat = is_fresh(entry, consistency,
   224→                                          self._ttl_seconds, backend, bp)
   225→            if fresh:
   226→                return entry.data[offset:offset + size]
   227→        else:
   228→            backend, bp, _ = self._registry.resolve(path)
   229→
   230→        data = backend.cat(bp)
   231→        if remote_stat is None:
   232→            remote_stat = backend.stat(bp)
   233→        self._cache.put(path,
   234→                        data,
   235→                        etag=remote_stat.extra.get("etag"),
   236→                        modified=remote_stat.modified,
   237→                        size=remote_stat.size)
   238→        self._tracker.on_read(path, data, self._mount_prefix(path))
   239→        return data[offset:offset + size]
   240→
   241→    def grep(self, pattern: str, path: str) -> list[str]:
   242→        backend, bp, _ = self._registry.resolve(path)
   243→        return backend.grep(pattern, bp)
   244→
   245→    # ── write ops ───────────────────────────────────────────────────────────
   246→
   247→    def write(self, path: str, data: bytes) -> None:
   248→        self._assert_not_locked(path)
   249→        self._assert_writable(path)
   250→        backend, bp, _ = self._registry.resolve(path)
   251→        self._cache.put(path, data)
   252→        self._tracker.on_write(path, data, self._mount_prefix(path))
   253→        self._record_transfer(path, "write", len(data), 0)
   254→        if self._sync_policy == SyncPolicy.IMMEDIATE:
   255→            backend.put(bp, data)
   256→            self._tracker.on_read(path, data, self._mount_prefix(path))
   257→
   258→    def mkdir(self, path: str) -> None:
   259→        self._assert_writable(path)
   260→        backend, bp, _ = self._registry.resolve(path)
   261→        backend.mkdir(bp)
   262→
   263→    def rm(self, path: str) -> None:
   264→        self._assert_writable(path)
   265→        backend, bp, _ = self._registry.resolve(path)
   266→        inode = self._tracker.get(path)
   267→        staged_only = inode and inode.dirty and inode.remote_checksum is None
   268→        if not staged_only:
   269→            backend.unlink(bp)
   270→        self._cache.invalidate(path)
   271→        self._tracker.on_delete(path)
   272→
   273→    def mv(self, src: str, dst: str) -> None:
   274→        self._assert_writable(src)
   275→        sb, sbp, _ = self._registry.resolve(src)
   276→        db, dbp, _ = self._registry.resolve(dst)
   277→        src_inode = self._tracker.get(src)
   278→        staged_only = (src_inode and src_inode.dirty
   279→                       and src_inode.remote_checksum is None)
   280→        if staged_only:
   281→            entry = self._cache.get(src)
   282→            data = entry.data if entry else b""
   283→            self._cache.put(dst, data)
   284→            self._tracker.on_write(dst, data, self._mount_prefix(dst))
   285→            self._cache.invalidate(src)
   286→            self._tracker.on_delete(src)
   287→        elif sb is db:
   288→            sb.rename(sbp, dbp)
   289→            self._cache.invalidate(src)
   290→        else:
   291→            data = sb.cat(sbp)
   292→            db.put(dbp, data)
   293→            sb.unlink(sbp)
   294→            self._cache.invalidate(src)
   295→
   296→    def cp(self, src: str, dst: str) -> None:
   297→        self._assert_writable(dst)
   298→        data = self.cat(src)
   299→        db, dbp, _ = self._registry.resolve(dst)
   300→        db.put(dbp, data)
   301→
   302→    # ── sync lifecycle ──────────────────────────────────────────────────────
   303→
   304→    def sync(self, path: str | None = None) -> list[SyncResult]:
   305→        results: list[SyncResult] = []
   306→        targets = [
   307→            i for i in self._tracker.dirty()
   308→            if path is None or i.virtual_path == path
   309→        ]
   310→        for inode in targets:
   311→            backend, bp, _ = self._registry.resolve(inode.virtual_path)
   312→            entry = self._cache.get(inode.virtual_path)
   313→            data = entry.data if entry else None
   314→            result = self._tracker.on_sync(inode.virtual_path, bp, data,
   315→                                           backend)
   316→            results.append(result)
   317→        return results
   318→
   319→    def status(self) -> list[Inode]:
   320→        return self._tracker.status()
   321→
   322→    def reset(self) -> None:
   323→        self._tracker.reset()
   324→        self._cache.clear()
   325→
   326→    # ── path locking ─────────────────────────────────────────────────────────
   327→
   328→    def _lock_path(self, path: str) -> None:
   329→        self._locked_paths.add(path)
   330→
   331→    def unlock_paths(self, paths: list[str]) -> None:
   332→        for p in paths:
   333→            self._locked_paths.discard(p)
   334→
   335→    def lock_paths(self, paths: list[str]) -> _PathLock:
   336→        for p in paths:
   337→            self._lock_path(p)
   338→        return _PathLock(self, paths)
   339→
   340→    def _assert_not_locked(self, path: str) -> None:
   341→        if path in self._locked_paths:
   342→            raise PermissionError(
   343→                f"path {path!r} is locked by remote execution")
   344→
   345→    # ── helpers ─────────────────────────────────────────────────────────────
   346→
   347→    def _mount_prefix(self, path: str) -> str:
   348→        norm = "/" + path.strip("/")
   349→        for m in self._registry.mounts():
   350→            if norm == m.prefix.rstrip("/") or norm.startswith(m.prefix):
   351→                return m.prefix
   352→        return "/"
   353→
   354→    def _assert_writable(self, path: str) -> None:
   355→        _, _, mode = self._registry.resolve(path)
   356→        if mode == MountMode.READ:
   357→            raise PermissionError(f"mount at {path!r} is read-only")
   358→
   359→    def _record_transfer(self,
   360→                         path: str,
   361→                         op: str,
   362→                         nbytes: int,
   363→                         duration_ms: int,
   364→                         cache_hit: bool | None = None) -> None:
   365→        prefix = self._mount_prefix(path)
   366→        if prefix not in self._transfer_stats:
   367→            self._transfer_stats[prefix] = TransferStats()
   368→        stats = self._transfer_stats[prefix]
   369→        if op == "read":
   370→            stats.bytes_read += nbytes
   371→            stats.read_ops += 1
   372→            stats.total_read_ms += duration_ms
   373→            if cache_hit is True:
   374→                stats.cache_hits += 1
   375→            elif cache_hit is False:
   376→                stats.cache_misses += 1
   377→        elif op == "write":
   378→            stats.bytes_written += nbytes
   379→            stats.write_ops += 1
   380→            stats.total_write_ms += duration_ms
   381→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→from pydantic import BaseModel
     2→
     3→from mirage.types import MountMode, SyncPolicy
     4→from mirage.workspace.consistency import ConsistencyPolicy
     5→
     6→
     7→class MountConfig(BaseModel):
     8→    uri: str | None = None
     9→    backend: str | None = None
    10→    args: dict[str, str] | None = None
    11→    mode: MountMode | None = None
    12→    consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED
    13→
    14→
    15→class CreateWorkspaceRequest(BaseModel):
    16→    mounts: dict[str, str | MountConfig]
    17→    sync_policy: SyncPolicy = SyncPolicy.STAGED
    18→    mode: MountMode = MountMode.WRITE
    19→    consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED
    20→    ttl_seconds: int = 300
    21→    runtime: str | None = None
    22→    fuse_ops: dict[str, str] | None = None
    23→
    24→
    25→class RegisterFuseRequest(BaseModel):
    26→    mountpoint: str
    27→    pid: int
    28→    mount_specs: list[str] = []
    29→    runtime: str | None = None
    30→
    31→
    32→class FilePayloadRequest(BaseModel):
    33→    checksum: str
    34→    data: str | None = None
    35→
    36→
    37→class ExecRequest(BaseModel):
    38→    command: str
    39→    cwd: str | None = None
    40→    stdin: str | None = None
    41→    input_files: dict[str, FilePayloadRequest] | None = None
    42→
    43→
    44→class FuseReportRequest(BaseModel):
    45→    mountpoint: str
    46→    status: dict
    47→    transfers: dict = {}
    48→    ops: list[dict] = []
    49→
    50→
    51→class RegisterCommandRequest(BaseModel):
    52→    name: str
    53→    exec: str
    54→    description: str = ""
    55→
    56→
    57→class RegisterFuseOpRequest(BaseModel):
    58→    pattern: str
    59→    handler: str
    60→
    61→
    62→class ReadRequest(BaseModel):
    63→    path: str
    64→    offset: int
    65→    size: int
    66→
    67→
    68→class WriteRequest(BaseModel):
    69→    path: str
    70→    offset: int
    71→    data: str
    72→
    73→
    74→class PathRequest(BaseModel):
    75→    path: str
    76→
    77→
    78→class ReaddirRequest(BaseModel):
    79→    path: str
    80→    cursor: str | None = None
    81→
    82→
    83→class RenameRequest(BaseModel):
    84→    src: str
    85→    dst: str
    86→
    87→
    88→class TruncateRequest(BaseModel):
    89→    path: str
    90→    size: int
    91→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→from mirage.backend.local import LocalBackend, MemoryBackend
     2→from mirage.types import FileStat, Inode, MountMode, SyncPolicy, SyncResult
     3→from mirage.workspace import Workspace
     4→from mirage.workspace.consistency import ConsistencyPolicy
     5→
     6→__all__ = [
     7→    "Workspace",
     8→    "MemoryBackend",
     9→    "LocalBackend",
    10→    "ConsistencyPolicy",
    11→    "FileStat",
    12→    "Inode",
    13→    "MountMode",
    14→    "SyncPolicy",
    15→    "SyncResult",
    16→]
    17→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


     1→import time
     2→import uuid
     3→from datetime import datetime, timezone
     4→
     5→from mirage.backend.loader import load_backend_class
     6→from mirage.cli.config import parse_mount_uri, split_mount_spec
     7→from mirage.commands import COMMANDS, _resolve
     8→from mirage.commands.builtin import nav
     9→from mirage.commands.custom.registry import CommandRegistry, ExternalCommand
    10→from mirage.fuse import FUSE_OPS
    11→from mirage.fuse.loader import build_registry_from_config, load_fuse_op_class
    12→from mirage.observe.entries import (CommandEntry, CommandResult, DispatchInfo,
    13→                                    ParsedCommand, SessionEntry, WorkspaceInfo)
    14→from mirage.observe.session_log import get_or_create_log
    15→from mirage.runtime.base import _BLOCKED, CommandNotAllowedError
    16→from mirage.server.service.base import MirageService
    17→from mirage.server.service.cache import FileCache
    18→from mirage.server.service.session import WorkspaceSession, _unmount_fuse
    19→from mirage.types import (FileStat, MountMode, RuntimeType, SyncPolicy)
    20→from mirage.workspace import Workspace
    21→from mirage.workspace.consistency import ConsistencyPolicy
    22→
    23→
    24→class LocalService(MirageService):
    25→
    26→    def __init__(self) -> None:
    27→        self._sessions: dict[str, WorkspaceSession] = {}
    28→        self._file_cache = FileCache()
    29→
    30→    def _get_session(self, ws_id: str) -> WorkspaceSession:
    31→        session = self._sessions.get(ws_id)
    32→        if session is None:
    33→            raise KeyError(f"workspace {ws_id!r} not found")
    34→        if session.fuse_mounted:
    35→            raise ValueError("not supported for fuse workspaces")
    36→        return session
    37→
    38→    def create_workspace(self, config: dict) -> str:
    39→        mode = config.get("mode", "write")
    40→        consistency = config.get("consistency", "cached")
    41→        default_mode = MountMode(mode)
    42→        default_consistency = ConsistencyPolicy(consistency)
    43→        mounts = config.get("mounts", {})
    44→
    45→        backends: dict = {}
    46→        for prefix, value in mounts.items():
    47→            if isinstance(value, str):
    48→                backends[prefix] = parse_mount_uri(value)
    49→            else:
    50→                backend_spec = value.get("backend")
    51→                if backend_spec:
    52→                    cls = load_backend_class(backend_spec)
    53→                    backend = cls(**(value.get("args") or {}))
    54→                else:
    55→                    backend = parse_mount_uri(value.get("uri") or "")
    56→                mount_mode = (MountMode(value["mode"])
    57→                              if value.get("mode") else default_mode)
    58→                mount_consistency = (ConsistencyPolicy(value["consistency"])
    59→                                     if value.get("consistency") else
    60→                                     default_consistency)
    61→                if (mount_mode != default_mode
    62→                        or mount_consistency != default_consistency):
    63→                    backends[prefix] = (backend, mount_mode, mount_consistency)
    64→                else:
    65→                    backends[prefix] = backend
    66→
    67→        ws = Workspace(
    68→            backends,
    69→            sync_policy=SyncPolicy(config.get("sync_policy", "staged")),
    70→            mode=default_mode,
    71→            consistency=default_consistency,
    72→            ttl_seconds=config.get("ttl_seconds", 300),
    73→        )
    74→
    75→        mounts_info: list[dict] = []
    76→        for prefix, value in mounts.items():
    77→            if isinstance(value, str):
    78→                uri = value
    79→            else:
    80→                uri = value.get("uri") or ""

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>


./ui/node_modules/.pnpm/flatted@3.4.1/node_modules/flatted/python/flatted.py
./tests/conftest.py
./tests/integration/test_remote_transfer.py
./tests/workspace/cache/test_store.py
./tests/workspace/cache/test_policy.py
./tests/workspace/test_sync.py
./tests/workspace/test_mount.py
./tests/workspace/test_workspace.py
./tests/workspace/test_cache_entry.py
./tests/fuse/test_registry.py
./tests/fuse/test_loader.py
./tests/fuse/backend/local/test_memory.py
./tests/fuse/backend/test_default.py
./tests/fuse/filetype/test_parquet.py
./tests/fuse/filetype/test_csv.py
./tests/fuse/test_fs.py
./tests/fuse/remote/test_remote.py
./tests/runtime/accessors/test_local.py
./tests/runtime/test_memory.py
./tests/runtime/test_local.py


Ok now is there anything else we can make the package more modular?


The user wants suggestions for making the package more modular. Let me think about what's left based on what I know about the codebase.

Current state after all refactoring:
- `types.py` — clean, only shared primitives
- `workspace/consistency.py` — ConsistencyPolicy, is_fresh, metadata_matches
- `workspace/sync.py` — SyncPolicy, DirtyTracker
- `workspace/mount.py` — Mount, MountRegistry
- `workspace/workspace.py` — Workspace
- `workspace/__init__.py` — re-exports Workspace, SyncPolicy
- `server/service/session.py` — CommandStats, WorkspaceSession, _unmount_fuse

- `server/service/local.py` — LocalService (~360 lines, 15 imports)

Looking at what's left, I notice `TransferStats` and `Inode` and `SyncResult` in `types.py` are really workspace-internal types that could be moved into the workspace namespace to reduce the coupling with the shared types module.

The bigger challenge is `local.py` itself — it's juggling workspace lifecycle, command execution, file I/O operations, FUSE management, and process handling all through a shared `_sessions` dict, which makes it hard to break apart cleanly.

I should also look at how `mirage/__init__.py` is importing from multiple levels and whether that can be simplified, and then check what's happening in the observe module. `BackendType` belongs in `config.py` since it's tied to URI parsing. The real wins are moving workspace-internal types like `Inode`, `SyncResult`, and `TransferStats` out of `types.py`, implementing lazy loading in the FUSE module, and then tackling `local.py` — though that's the trickiest one since it has so much shared state. Let me trace where `Inode` actually flows through the codebase to understand the scope of moving it. method)
- `mirage/__init__.py` (re-exported)
- Various tests

`Inode` is a workspace-level concept. It could go in `workspace/sync.py` alongside `DirtyTracker` which creates it.

**`SyncResult`**: Used in:
- `workspace/sync.py` (on_sync returns SyncResult)
- `workspace/workspace.py` (sync() returns list[SyncResult])
- `server/service/local.py` (sync method)
- `mirage/__init__.py` (re-exported)

`SyncResult` is also workspace-sync-specific.

**`TransferStats`**: Used in:
- `workspace/workspace.py` (internal dict)
- `observe/inspector.py` (workspace_transfers_from_ws)

Could move to `workspace/workspace.py` directly

So I'm thinking `Inode` and `SyncResult` should move to `workspace/sync.py`, while `TransferStats` could live in `workspace/workspace.py` or a dedicated `workspace/stats.py`. This would leave `types.py` containing only the broadly-used external types like `FileType`, `CostLevel`, `FileStat`, `MountMode`, `RuntimeType`, `BackendType`, and the runtime-specific ones like `FilePayload` and `CommandResult`. There's also the question of eager imports in `fuse/__init__.py` where the FUSE ops dict gets built at module load time.


Let me look at what's left in `types.py` and the remaining heavy files:


Bash

grep -rn "from mirage.types import" mirage/ --include="*.py" | grep -v "__pycache__" | sort

Check remaining types.py import sites


mirage/__init__.py:2:from mirage.types import FileStat, Inode, MountMode, SyncResult
mirage/backend/base.py:3:from mirage.types import FileStat
mirage/backend/filetype.py:1:from mirage.types import FileType
mirage/backend/local/local.py:7:from mirage.types import FileStat, FileType
mirage/backend/local/memory.py:6:from mirage.types import FileStat, FileType
mirage/backend/network/http.py:5:from mirage.types import FileStat
mirage/backend/network/proxy.py:6:from mirage.types import FileStat
mirage/backend/object_storage/s3.py:8:from mirage.types import FileStat, FileType
mirage/cli/commands/command.py:13:from mirage.types import MountMode, RuntimeType
mirage/cli/commands/workspace.py:23:from mirage.types import MountMode, RuntimeType
mirage/cli/config.py:8:from mirage.types import BackendType, MountMode
mirage/commands/builtin/handlers.py:4:from mirage.types import CostLevel
mirage/commands/builtin/nav.py:5:from mirage.types import FileStat, FileType
mirage/commands/builtin/read.py:6:from mirage.types import FileStat, FileType
mirage/commands/builtin/search.py:6:from mirage.types import FileType
mirage/commands/builtin/write.py:5:from mirage.types import FileType
mirage/commands/custom/arg_resolver.py:4:from mirage.types import FileType
mirage/commands/custom/registry.py:11:from mirage.types import FilePayload, RemoteCommandOptions
mirage/commands/remote/client.py:9:from mirage.types import CommandResult, FilePayload
mirage/observe/entries.py:5:from mirage.types import RuntimeType
mirage/observe/inspector.py:8:from mirage.types import CostLevel
mirage/runtime/local.py:4:from mirage.types import MountMode
mirage/runtime/remote.py:11:from mirage.types import MountMode
mirage/server/fastapi/config.py:3:from mirage.types import MountMode
mirage/server/service/base.py:3:from mirage.types import FileStat
mirage/server/service/local.py:19:from mirage.types import (FileStat, MountMode, RuntimeType)
mirage/server/service/session.py:11:from mirage.types import MountMode, RuntimeType
mirage/workspace/consistency.py:5:from mirage.types import FileStat
mirage/workspace/mount.py:2:from mirage.types import MountMode
mirage/workspace/sync.py:6:from mirage.types import Inode, SyncResult
mirage/workspace/workspace.py:7:from mirage.types import (FileStat, Inode, MountMode, SyncResult, TransferStats)


Now I have a clear picture. Let me analyze what's still in `types.py` and where it's used:

**`FileStat`**: Used by backends, builtin commands, service base, workspace. This is truly a shared primitive across all layers. KEEP in types.py.

**`FileType`**: Used by backends, builtin commands. Also shared. KEEP.

**`MountMode`**: Used by workspace, CLI, runtime, session, service. Shared. KEEP.

**`RuntimeType`**: Used by CLI, observe, session. Could argue either way. KEEP for now.

**`CostLevel`**: Used by commands/builtin/handlers and observe/inspector.

**`BackendType`**: Only referenced in `cli/config.py`, so this could move there as a CLI-specific enum.

**`Inode`** and **`SyncResult`**: Both are workspace-specific—created and returned by sync operations—so they'd fit better in `workspace/sync.py`.

**`TransferStats`**: Only used internally by `workspace/workspace.py`, so it could stay there or move to sync.py depending on where the actual transfer logic lives.

**`FilePayload`** and **`RemoteCommandOptions`**: These are command-specific and could move to their respective command modules.

**`CommandResult`**: Used by remote commands and tests, so it belongs in `commands/remote/`.

The pattern is clear: I should extract types to the modules where they're actually used, grouping sync-related types together and keeping command types with their respective command implementations.

After these moves, `types.py` would be left with just the core primitives like `FileType`, `FileStat`, `MountMode`, and `RuntimeType` — the things that genuinely need to be universally accessible.

I should also look at the lazy loading approach in `fuse/__init__.py` and consider how to handle the io_* methods in `local.py` more cleanly by delegating them to workspace. The most impactful refactoring would be moving `Inode` and `SyncResult` to `workspace/sync.py` since they're tightly coupled to sync operations. The lazy-loading optimization is really about improving startup performance rather than cleaning up the module structure itself. Let me organize all these changes into a clear plan.


grep -rn "Inode\|SyncResult\|TransferStats\|BackendType\|CostLevel\|FilePayload\|RemoteCommandOptions\|CommandResult" mirage/ --include="*.py" | grep -v "__pycache__" | grep -v "class \|def \|#" | grep "import" | sort

Check remaining types usage by module


mirage/__init__.py:2:from mirage.types import FileStat, Inode, MountMode, SyncResult
mirage/cli/config.py:8:from mirage.types import BackendType, MountMode
mirage/commands/builtin/handlers.py:4:from mirage.types import CostLevel
mirage/commands/custom/registry.py:11:from mirage.types import FilePayload, RemoteCommandOptions
mirage/commands/remote/client.py:9:from mirage.types import CommandResult, FilePayload
mirage/observe/inspector.py:8:from mirage.types import CostLevel
mirage/server/service/local.py:12:from mirage.observe.entries import (CommandEntry, CommandResult, DispatchInfo,
mirage/workspace/sync.py:6:from mirage.types import Inode, SyncResult
mirage/workspace/workspace.py:7:from mirage.types import (FileStat, Inode, MountMode, SyncResult, TransferStats)


Now I have a clear picture. Let me provide a structured analysis of remaining modularity improvements.

**Groups:**
1. **`Inode` + `SyncResult`**: Only used in `workspace/sync.py` and `workspace/workspace.py` → Move to `workspace/sync.py`
2. **`TransferStats`**: Only used in `workspace/workspace.py` and `observe/inspector.py` → Move to `workspace/workspace.py`
3. **`BackendType`**: Only used in `cli/config.py` → Move there
4. **`CostLevel`**: Used in `commands/builtin/handlers.py` and `observe/inspector.py` → Move to `commands/`

5. **`FilePayload` + `RemoteCommandOptions`**: Used in `commands/custom/registry.py` and `commands/remote/client.py` → Move to `commands/`
6. **`CommandResult`**: Primarily in `commands/remote/client.py` with some usage in `observe/entries.py` and tests → Move to `commands/remote/`

Let me double-check the actual usage patterns for `CommandResult` to confirm the best placement.

Looking more carefully at the imports, I see there's actually a naming collision here—`observe/entries.py` defines its own `CommandResult` class that's distinct from the one in `types.py`. The version in `types.py` is a Pydantic model that captures command execution output with stdout and file artifacts, while the observe layer has a different implementation. Since `types.CommandResult` is primarily consumed by the remote command client, moving it to `commands/remote/` makes sense and avoids the confusion with the observe-layer version. I'm seeing a clear pattern here—most of these types belong in their specific modules rather than living in a central `types.py`. Moving `Inode`, `SyncResult`, `TransferStats`, `BackendType`, `CostLevel`, and the remote execution types to their respective domains would leave `types.py` with just four truly universal types: `FileType`, `FileStat`, `MountMode`, and `RuntimeType`. There might be other opportunities to optimize the module structure too, like lazy-loading certain imports.


Here's the complete picture of what's still movable out of `types.py`:

**Tier 1 — workspace-internal types** (only used within `workspace/`):
- `Inode` + `SyncResult` → `workspace/sync.py` (created/returned by `DirtyTracker`)
- `TransferStats` → `workspace/workspace.py` (only `workspace.py` and `observe/inspector.py` use it)

After these: `workspace/sync.py` imports become entirely self-contained, and `types.py` loses 3 more types.

**Tier 2 — command protocol types** (only used in `commands/`):
- `FilePayload`, `RemoteCommandOptions` → `commands/custom/` or `commands/remote/`
- `CommandResult` → `commands/remote/` (note: there's already a *different* `CommandResult` in `observe/entries.py` — that's a naming collision worth fixing)

**Tier 3 — single-file types**:
- `BackendType` → `cli/config.py` (literally only used there for URI parsing)
- `CostLevel` → `commands/` (used by `commands/builtin/handlers.py` and `observe/inspector.py`)

After all of these, `types.py` would contain exactly 4 types: `FileType`, `FileStat`, `MountMode`, `RuntimeType` — the universal primitives used across every layer.

**Separate opportunity — `fuse/__init__.py` eager loading:**
`FUSE_OPS` builds a dict at import time that imports S3/Parquet backends (boto3, pyarrow). These are optional heavy deps. This could be lazy-loaded so startup doesn't pay the cost unless those backends are actually registered.

---

The `CommandResult` naming collision is probably worth fixing alongside Tier 2. Want to start with Tier 1 (workspace types) since it's the most impactful and cleanest?


Start