chore: import upstream snapshot with attribution

2026-07-13 12:02:56 +08:00
commit 5f98960d22
495 changed files with 149129 additions and 0 deletions
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Tool-surface ablation — run ONE repo+question under ONE arm.
+#
+# Arms vary (exposed codegraph tools, trace-first steering). Tools are trimmed
+# SERVER-SIDE via CODEGRAPH_MCP_TOOLS in the MCP config's `env` block, so an
+# ablated tool is genuinely absent from ListTools — no deferred-ToolSearch or
+# denied-call confound (which --disallowedTools would introduce). Steering is
+# injected with --append-system-prompt, so no rebuild of the shipped
+# server-instructions is needed to A/B it.
+#
+#   A control       all tools            no steering
+#   B steer         all tools            trace-first
+#   C no-explore    hide explore         trace-first
+#   D trace-centric hide explore+context trace-first
+#   E control-probe hide explore+context trace-first  (caller passes a NON-flow Q)
+#
+# Usage: run-arms.sh <repo-path> "<question>" <A|B|C|D|E> [run-id]
+set -uo pipefail
+REPO="${1:?repo path}"; Q="${2:?question}"; ARM="${3:?arm A-E}"; RID="${4:-1}"
+CG_BIN="${CG_BIN:-$(command -v codegraph)}"
+OUT="${ARMS_OUT:-/tmp/arms}/$(basename "$REPO")"
+mkdir -p "$OUT"
+[ -n "$CG_BIN" ] || { echo "no codegraph binary (set CG_BIN)"; exit 1; }
+[ -d "$REPO/.codegraph" ] || { echo "no .codegraph index at $REPO"; exit 1; }
+
+STEER='Flow questions ("how does X reach/become Y", "trace the flow", request to handler, state to render): call codegraph_trace(from,to) FIRST — one call returns the whole path. Use codegraph_context/search only to locate the two endpoint symbols if you do not know them. Do NOT reconstruct the path with repeated search/callers/explore.'
+KEEP_NO_EXPLORE="trace,search,node,context,callers,callees,impact,files,status"
+KEEP_TRACE_CENTRIC="trace,search,node,callers,callees,impact,files,status"
+
+case "$ARM" in
+  A|G|H|I) TOOLS="";            STEERING="" ;;  # no steering; H = body-trace, I = body-trace + destination callees (sufficiency)
+  B|F) TOOLS="";                STEERING="$STEER" ;;  # F = B's surface, run on the body-inlining trace build
+  C) TOOLS="$KEEP_NO_EXPLORE";  STEERING="$STEER" ;;
+  D|E) TOOLS="$KEEP_TRACE_CENTRIC"; STEERING="$STEER" ;;
+  *) echo "bad arm '$ARM' (want A|B|C|D|E)"; exit 1 ;;
+esac
+
+CFG="$OUT/mcp-$ARM.json"
+if [ -n "$TOOLS" ]; then
+  cat > "$CFG" <<JSON
+{"mcpServers":{"codegraph":{"command":"$CG_BIN","args":["serve","--mcp","--path","$REPO"],"env":{"CODEGRAPH_MCP_TOOLS":"$TOOLS"}}}}
+JSON
+else
+  cat > "$CFG" <<JSON
+{"mcpServers":{"codegraph":{"command":"$CG_BIN","args":["serve","--mcp","--path","$REPO"]}}}
+JSON
+fi
+
+LOG="$OUT/$ARM-r$RID.jsonl"; ERR="$OUT/$ARM-r$RID.err"
+ARGS=( -p "$Q" --output-format stream-json --verbose
+       --permission-mode bypassPermissions --model "${MODEL:-sonnet}" --effort "${EFFORT:-high}" --max-budget-usd 4
+       --strict-mcp-config --mcp-config "$CFG" )
+[ -n "$STEERING" ] && ARGS+=( --append-system-prompt "$STEERING" )
+
+( cd "$REPO" && claude "${ARGS[@]}" > "$LOG" 2>"$ERR" )
+echo "[$(basename "$REPO") $ARM r$RID] exit $? -> $LOG ($(wc -l < "$LOG" | tr -d ' ') lines)"