1jehuang--jcode/docs/CODE_QUALITY_AUDIT_2026-04-18.md

Code Quality Audit - 2026-04-18

This report inventories the repo-wide code-quality issues detectable with static scanning and targeted structural heuristics. It is intended as a comprehensive backlog seed, not just a shortlist.

Scope and method

• scanned all Rust files outside target, .git, and node_modules
• measured file size by LOC
• approximated function size by brace-balanced fn blocks
• counted panic-prone macros and methods with path-based test classification
• inventoried allow(...) suppressions and TODO/FIXME/HACK/XXX markers
• note: path-based production vs test classification is approximate and may overcount test-only code embedded inside production files

Current positives

• cargo clippy --all-targets --all-features -- -D warnings passes cleanly
• no #[allow(dead_code)] suppressions remain in Rust sources
• formatting is currently clean

Repo metrics

• Rust files scanned: 455
• src/ Rust files: 429 totaling 277,014 LOC
• tests/ Rust files: 11 totaling 4,802 LOC
• crates/ Rust files: 14 totaling 5,335 LOC
• Production files over 1200 LOC: 50
• Production files between 801 and 1200 LOC: 62
• Approximate production functions over 100 LOC: 304 across 165 files

unwrap / expect split by production vs test-only files

Using improved path-based classification for Rust files:

• production files exclude tests/, *_test.rs, *_tests.rs, and directories ending in _test / _tests
• test-only files include tests/ and Rust files or directories explicitly marked as tests
• note: this is still path-based, so test-only code embedded inside production files is counted as production

Counts

Scope	unwrap / expect occurrences
Production files	1258
Test-only files	1334

Highest-count production files

Count	File
136	src/tool/communicate.rs
62	src/build.rs
52	src/auth/cursor.rs
46	src/auth/codex.rs
42	src/provider/openai.rs
37	src/auth/claude.rs
30	src/cli/dispatch.rs
28	src/tool/bash.rs
26	src/storage.rs
25	src/auth/gemini.rs
25	src/tool/read.rs
25	src/tui/session_picker/loading.rs
24	src/side_panel.rs
24	src/cli/args.rs
24	src/server/comm_control.rs

Highest-count test-only files

Count	File
788	src/tui/app/tests.rs
98	src/tool/selfdev/tests.rs
59	src/memory_tests.rs
44	src/import_tests.rs
26	src/provider/tests.rs
26	src/tool/agentgrep_tests.rs
24	src/tui/mermaid_tests.rs
24	src/server/socket_tests.rs
21	src/tui/markdown_tests/cases.rs
20	src/provider/openrouter_tests.rs
18	src/tui/ui_pinned_tests.rs
17	src/cli/provider_init_tests.rs
15	src/agent_tests.rs
12	tests/e2e/provider_behavior.rs
12	src/server/startup_tests.rs

Structural debt

Production files over 1200 LOC

LOC	File
3228	src/server/comm_control.rs
3165	src/tool/communicate.rs
2729	src/session.rs
2704	src/server/client_lifecycle.rs
2683	src/provider/openai.rs
2437	src/tui/ui.rs
2397	src/memory.rs
2365	src/provider/mod.rs
2217	src/telemetry.rs
2131	src/tui/ui_messages.rs
2115	src/tui/session_picker.rs
2041	src/tui/app/inline_interactive.rs
2023	src/tui/app/input.rs
2005	src/config.rs
1969	src/provider/anthropic.rs
1919	src/tui/app/remote/key_handling.rs
1912	src/tui/app/auth.rs
1900	src/usage.rs
1888	src/tui/session_picker/loading.rs
1881	src/cli/login.rs
1794	src/replay.rs
1769	src/cli/provider_init.rs
1738	src/bin/tui_bench.rs
1718	src/compaction.rs
1708	src/tui/ui_prepare.rs
1696	src/memory_agent.rs
1688	src/tui/info_widget.rs
1678	src/tui/ui_pinned.rs
1670	src/cli/tui_launch.rs
1630	src/tui/app/commands.rs
1607	src/auth/mod.rs
1572	src/tui/ui_input.rs
1559	src/server.rs
1551	src/tui/app/helpers.rs
1516	src/tool/agentgrep.rs
1504	src/import.rs
1496	src/ambient.rs
1491	src/server/swarm.rs
1446	src/tui/ui_tools.rs
1375	src/tui/markdown.rs
1362	src/protocol.rs
1341	src/tool/ambient.rs
1308	src/auth/oauth.rs
1300	src/tui/app/remote.rs
1292	src/tui/app/turn.rs
1263	src/provider/models.rs
1257	src/server/client_actions.rs
1211	src/tui/app/model_context.rs
1210	src/tui/app/tui_state.rs
1202	src/provider/gemini.rs

Production files between 801 and 1200 LOC

LOC	File
1195	src/video_export.rs
1192	src/tui/app/auth_account_picker.rs
1167	src/tui/mod.rs
1155	src/provider/copilot.rs
1150	src/tui/app/state_ui.rs
1144	src/tool/browser.rs
1142	src/provider/claude.rs
1132	src/provider/openrouter.rs
1125	src/tui/app/remote/server_events.rs
1124	src/tui/app/debug_bench.rs
1116	src/tui/mermaid.rs
1109	src/update.rs
1094	src/server/client_session.rs
1093	src/provider/openai_stream_runtime.rs
1087	src/tool/mod.rs
1075	src/tui/app/state_ui_input_helpers.rs
1071	src/server/comm_session.rs
1057	src/ambient/runner.rs
1043	src/provider/cursor.rs
1039	src/cli/commands.rs
1038	src/server/debug.rs
1038	src/message.rs
1037	src/tui/app/commands_review.rs
1014	src/tui/app/navigation.rs
1012	src/tui/account_picker.rs
995	src/goal.rs
980	src/memory_graph.rs
979	src/tui/markdown_render_full.rs
976	src/auth/claude.rs
970	src/auth/cursor.rs
958	src/browser.rs
956	src/runtime_memory_log.rs
945	src/agent/turn_streaming_mpsc.rs
929	src/cli/dispatch.rs
925	src/tui/ui_animations.rs
923	src/tui/app/auth_account_commands.rs
918	src/tui/test_harness.rs
911	src/auth/codex.rs
902	src/tui/keybind.rs
900	src/tui/ui_inline_interactive.rs
897	src/tui/ui_header.rs
895	src/server/state.rs
892	src/build.rs
881	src/tui/backend.rs
878	src/tui/login_picker.rs
872	src/sidecar.rs
868	src/tui/app/tui_lifecycle.rs
865	src/tui/permissions.rs
865	src/tui/markdown_render_lazy.rs
863	src/gateway.rs
862	src/tool/read.rs
860	src/provider/antigravity.rs
859	src/tool/apply_patch.rs
858	src/tool/bash.rs
849	src/auth/gemini.rs
847	src/tui/visual_debug.rs
827	src/setup_hints.rs
826	src/server/reload.rs
815	src/auth/copilot.rs
812	src/tui/app.rs
804	src/tui/app/remote/reconnect.rs
803	src/server/debug_swarm_read.rs

Test files over 1200 LOC

LOC	File
13615	src/tui/app/tests.rs
1263	src/server/client_session_tests/resume.rs
1252	src/provider/tests.rs
1226	src/cli/auth_test.rs

Files with the most >100 LOC production functions

Count	File
8	src/server/comm_control.rs
7	src/tool/communicate.rs
6	src/provider/mod.rs
5	src/auth/mod.rs
5	src/tui/app/auth.rs
5	src/tui/app/debug_bench.rs
4	src/provider/anthropic.rs
4	src/tui/ui_pinned.rs
4	src/tui/ui_prepare.rs
4	src/tui/app/inline_interactive.rs
4	src/tui/app/auth_account_picker.rs
4	src/cli/tui_launch.rs
4	src/server/client_comm.rs
3	src/import.rs
3	src/memory_agent.rs
3	src/replay.rs
3	src/video_export.rs
3	src/server.rs
3	src/usage.rs
3	src/config.rs
3	src/bin/tui_bench.rs
3	src/provider/claude.rs
3	src/provider/copilot.rs
3	src/provider/openai_stream_runtime.rs
3	src/tui/ui_animations.rs
3	src/tui/ui_input.rs
3	src/tui/ui_header.rs
3	src/tui/info_widget.rs
3	src/tui/app/model_context.rs
3	src/tui/app/tui_state.rs
3	src/tui/app/auth_account_commands.rs
3	src/tui/app/commands.rs
3	src/tui/app/remote.rs
3	src/tui/app/debug_profile.rs
3	src/tui/session_picker/loading.rs
3	src/server/comm_plan.rs
3	src/server/client_actions.rs
3	src/server/client_session.rs
3	src/server/swarm.rs
3	src/server/client_lifecycle.rs
2	src/compaction.rs
2	src/telemetry.rs
2	src/background.rs
2	src/auth/oauth.rs
2	src/provider/dispatch.rs
2	src/tool/apply_patch.rs
2	src/tool/agentgrep.rs
2	src/tool/bash.rs
2	src/tool/browser.rs
2	src/tool/selfdev/build_queue.rs

Longest production functions detected

LOC	Function	Location
1827	handle_remote_key_internal	src/tui/app/remote/key_handling.rs:93-1919
1658	handle_client	src/server/client_lifecycle.rs:669-2326
1121	handle_server_event	src/tui/app/remote/server_events.rs:5-1125
1016	run_turn_interactive	src/tui/app/turn.rs:23-1038
976	render_markdown_with_width	src/tui/markdown_render_full.rs:4-979
941	run_turn_streaming_mpsc	src/agent/turn_streaming_mpsc.rs:4-944
863	render_markdown_lazy	src/tui/markdown_render_lazy.rs:3-865
783	maybe_handle_swarm_read_command	src/server/debug_swarm_read.rs:21-803
780	execute	src/tool/communicate.rs:727-1506
771	run_turn_streaming	src/agent/turn_streaming_broadcast.rs:4-774
760	run_turn	src/agent/turn_loops.rs:9-768
602	complete	src/provider/openrouter_provider_impl.rs:6-607
591	draw_inner	src/tui/ui.rs:1758-2348
556	handle_debug_command	src/tui/app/debug_cmds.rs:4-559
548	handle_lightweight_control_request	src/server/client_lifecycle.rs:105-652
525	draw_messages	src/tui/ui_viewport.rs:147-671
509	get_suggestions_for	src/tui/app/state_ui_input_helpers.rs:374-882
501	handle_login_input	src/tui/app/auth.rs:1166-1666
490	get_tool_summary_with_budget	src/tui/ui_tools.rs:887-1376
487	execute_debug_command	src/server/debug_command_exec.rs:88-574
482	spawn_background_tasks	src/server.rs:651-1132
470	main	src/bin/tui_bench.rs:1269-1738
443	test_parse_openai_response_function_call_arguments_streaming	src/provider/openai.rs:2241-2683
433	apply_env_overrides	src/config.rs:773-1205
429	draw_inline_interactive	src/tui/ui_inline_interactive.rs:259-687
422	maybe_handle_swarm_write_command	src/server/debug_swarm_write.rs:11-432
408	build_server_memory_payload	src/server/debug_server_state.rs:254-661
405	handle_resume_session	src/server/client_session.rs:686-1090
404	prepare_body_incremental	src/tui/ui_prepare.rs:608-1011
401	handle_info_command	src/tui/app/state_ui.rs:750-1150
401	handle_comm_task_control	src/server/comm_control.rs:1546-1946
393	render_preview	src/tui/session_picker.rs:795-1187
382	draw_pinned_content_cached	src/tui/ui_pinned.rs:842-1223
380	build_responses_input	src/provider/openai_request.rs:286-665
376	stream_response_websocket_persistent	src/provider/openai_stream_runtime.rs:551-926
371	handle_inline_interactive_key	src/tui/app/inline_interactive.rs:1551-1921
369	set_model	src/provider/mod.rs:821-1189
367	render_tool_message	src/tui/ui_messages.rs:864-1230
362	prepare_body	src/tui/ui_prepare.rs:1066-1427
358	handle_comm_assign_task	src/server/comm_control.rs:1008-1365
346	draw_help_overlay	src/tui/ui_overlays.rs:85-430
340	debug_app_owned_memory_profile	src/tui/app/debug_profile.rs:170-509
339	handle_session_command	src/tui/app/commands.rs:578-916
324	try_persistent_ws_continuation	src/provider/openai_stream_runtime.rs:224-547
320	init_provider_with_options	src/cli/provider_init.rs:1428-1747
316	new	src/tui/app/tui_lifecycle.rs:422-737
316	execute	src/tool/gmail.rs:93-408
315	draw_status	src/tui/ui_input.rs:397-711
313	model_routes	src/provider/mod.rs:1342-1654
312	handle_debug_client	src/server/debug.rs:184-495
307	get_relevant_parallel	src/memory.rs:1752-2058
304	list_sessions	src/cli/tui_launch.rs:1146-1449
303	execute	src/tool/memory.rs:116-418
296	complete	src/provider/openai_provider_impl.rs:8-303
294	run_loop	src/ambient/runner.rs:443-736
291	run_scroll_test	src/tui/app/debug_bench.rs:710-1000
290	new_minimal_with_session	src/tui/app/tui_lifecycle.rs:131-420
289	open_account_center	src/tui/app/auth_account_picker.rs:4-292
277	handle_model_command	src/tui/app/model_context.rs:862-1138
277	monitor_bus	src/server.rs:1162-1438
275	display_string	src/config.rs:1688-1962
267	emit_lifecycle_event	src/telemetry.rs:1929-2195
261	prepare_messages_inner	src/tui/ui_prepare.rs:300-560
261	render_mermaid_sized_internal	src/tui/mermaid_cache_render.rs:427-687
261	handle_mouse_event	src/tui/app/navigation.rs:683-943
260	open_model_picker	src/tui/app/inline_interactive.rs:728-987
258	build_all_inline_account_picker	src/tui/app/auth_account_picker.rs:445-702
256	buffer_to_svg	src/video_export.rs:610-865
253	info_widget_data	src/tui/app/tui_state.rs:769-1021
249	build_header_lines	src/tui/ui_header.rs:421-669
249	extract_from_context	src/memory_agent.rs:725-973
245	box_drawing_to_svg	src/video_export.rs:931-1175
243	do_build	src/tool/selfdev/build_queue.rs:340-582
241	spawn_assigned_task_run	src/server/comm_control.rs:441-681
240	complete	src/provider/gemini.rs:393-632
240	process_context	src/memory_agent.rs:393-632
240	create_default_config_file	src/config.rs:1446-1685
238	handle_comm_propose_plan	src/server/comm_plan.rs:25-262
238	login_google_flow	src/cli/login.rs:1538-1775
235	new_with_auth_status	src/provider/startup.rs:50-284
234	run_side_panel_latency_bench	src/tui/app/debug_bench.rs:79-312
233	try_auto_compact_and_retry	src/tui/app/model_context.rs:441-673
233	handle_config_command	src/tui/app/commands.rs:1279-1511
232	run_mermaid_ui_bench	src/tui/app/debug_bench.rs:314-545
232	build_ambient_system_prompt	src/ambient.rs:788-1019
229	maybe_handle_server_state_command	src/server/debug_server_state.rs:20-248
228	run_memory_command	src/cli/commands.rs:161-388
225	draw_side_panel_markdown	src/tui/ui_pinned.rs:1225-1449
224	compact_tool_input_for_display	src/tui/app/state_ui_storage.rs:3-226
223	send_history	src/server/client_state.rs:232-454
221	handle_debug_command	src/tui/app/debug.rs:538-758
221	run_main	src/cli/dispatch.rs:21-241
220	rebuild_items	src/tui/session_picker/filter.rs:125-344
220	export_timeline	src/replay.rs:138-357
217	handle_comm_message	src/server/client_comm_message.rs:149-365
215	bridge_request	src/tool/browser.rs:472-686
213	connect_with_retry	src/tui/app/remote/reconnect.rs:339-551
212	restore_input_for_reload	src/tui/app/state_ui.rs:240-451
210	run_replay_command	src/cli/tui_launch.rs:437-646
208	shape_char_3x3	src/tui/ui_animations.rs:574-781
208	selfdev_status_output	src/tool/selfdev/status.rs:3-210
208	execute	src/tool/goal.rs:141-348
207	parse_account_command	src/tui/app/auth_account_commands.rs:69-275
206	restore_session	src/tui/app/tui_lifecycle_runtime.rs:212-417
205	render_image_widget	src/tui/mermaid_widget.rs:91-295
205	render_image_widget_viewport	src/tui/mermaid_viewport.rs:552-756
205	spawn_swarm_agent	src/server/comm_session.rs:196-400
205	handle_subscribe	src/server/client_session.rs:339-543
204	parse_next_event	src/provider/openrouter_sse_stream.rs:264-467
203	cleanup_client_connection	src/server/client_disconnect_cleanup.rs:55-257
198	calculate_placements	src/tui/info_widget_layout.rs:39-236
198	calculate_widget_height	src/tui/info_widget.rs:751-948
195	parse_text_wrapped_tool_call	src/agent/response_recovery.rs:4-198
194	do_reload	src/tool/selfdev/reload.rs:88-281
192	render_image_widget_fit_inner	src/tui/mermaid_widget.rs:318-509
188	write_frame	src/tui/visual_debug.rs:573-760
187	emit_ndjson_event	src/cli/commands.rs:758-944
186	stream_request	src/provider/copilot.rs:608-793
183	handle_ws_connection	src/gateway.rs:282-464
182	process_sse_stream	src/provider/copilot.rs:795-976

Error-handling and panic-surface debt

Path-classified counts below are approximate. Inline #[cfg(test)] modules inside production files may inflate production totals.

Macro/method counts

Scope	unwrap	expect	panic!	todo!	unimplemented!	total
prod	361	978	92	0	11	1442
testlike	501	832	52	0	10	1395

Highest-count production files

Total	File	unwrap	expect	panic!	todo!	unimplemented!
136	src/tool/communicate.rs	0	136	0	0	0
64	src/build.rs	9	53	2	0	0
54	src/provider/openai.rs	7	38	9	0	0
52	src/auth/cursor.rs	48	4	0	0	0
46	src/auth/codex.rs	45	1	0	0	0
41	src/server/comm_control.rs	0	30	11	0	0
40	src/cli/args.rs	24	0	16	0	0
37	src/auth/claude.rs	28	9	0	0	0
30	src/cli/dispatch.rs	0	28	2	0	0
28	src/tool/bash.rs	7	21	0	0	0
26	src/storage.rs	0	26	0	0	0
25	src/tui/session_picker/loading.rs	0	25	0	0	0
25	src/tool/read.rs	0	25	0	0	0
25	src/auth/gemini.rs	4	21	0	0	0
24	src/tool/apply_patch.rs	15	1	8	0	0
24	src/side_panel.rs	0	24	0	0	0
24	src/server/client_comm.rs	0	12	11	0	1
23	src/server/reload.rs	0	23	0	0	0
21	src/tui/session_picker.rs	7	13	1	0	0
21	src/server/debug.rs	0	18	2	0	1
20	src/tool/goal.rs	0	19	1	0	0
20	src/server/comm_session.rs	0	20	0	0	0
19	src/cli/tui_launch.rs	0	18	1	0	0
19	src/auth/external.rs	19	0	0	0	0
18	src/provider/gemini.rs	7	10	0	0	1
17	src/restart_snapshot.rs	0	17	0	0	0
16	src/server/client_state.rs	0	14	1	0	1
16	src/replay.rs	11	2	3	0	0
16	src/goal.rs	0	16	0	0	0
15	src/server/client_actions.rs	3	9	2	0	1
14	src/tui/app/remote.rs	0	13	0	0	1
14	src/memory_graph.rs	12	2	0	0	0
14	src/mcp/protocol.rs	11	2	1	0	0
14	src/cli/selfdev.rs	1	12	0	0	1
13	src/setup_hints/macos_launcher.rs	0	13	0	0	0
13	src/server/client_lifecycle.rs	0	10	3	0	0
13	src/registry.rs	0	13	0	0	0
12	src/tool/batch.rs	12	0	0	0	0
12	src/server/swarm_mutation_state.rs	0	8	4	0	0
12	src/provider_catalog.rs	0	12	0	0	0
12	src/prompt.rs	11	1	0	0	0
11	src/tool/agentgrep.rs	0	11	0	0	0
10	src/tool/ambient.rs	10	0	0	0	0
9	src/soft_interrupt_store.rs	0	9	0	0	0
9	src/server/provider_control.rs	3	6	0	0	0
9	src/platform.rs	0	9	0	0	0
9	src/cli/login.rs	0	8	1	0	0
9	src/cli/commands/restart.rs	0	9	0	0	0
8	src/tool/side_panel.rs	0	8	0	0	0
8	src/tool/browser.rs	6	2	0	0	0
8	src/stdin_detect.rs	0	8	0	0	0
8	src/sidecar.rs	0	8	0	0	0
8	src/runtime_memory_log.rs	0	8	0	0	0
8	src/message.rs	4	1	3	0	0
8	src/gateway.rs	1	7	0	0	0
8	src/ambient.rs	8	0	0	0	0
7	src/server/swarm.rs	0	6	1	0	0
7	src/server/debug_testers.rs	0	7	0	0	0
7	src/provider/cursor.rs	4	3	0	0	0
7	src/dictation.rs	0	7	0	0	0

Production files still containing todo! or unimplemented!

Count	File
7	src/tui/app/tests.rs
1	src/tui/ui_header.rs
1	src/tui/app/remote.rs
1	src/tool/mod.rs
1	src/server/startup_tests.rs
1	src/server/queue_tests.rs
1	src/server/debug_command_exec.rs
1	src/server/debug.rs
1	src/server/client_state.rs
1	src/server/client_session_tests.rs
1	src/server/client_comm.rs
1	src/server/client_actions.rs
1	src/provider/gemini.rs
1	src/cli/selfdev.rs
1	src/ambient/runner.rs

Suppression inventory

• Rust files containing allow(...): 17
• Total allow(...) attributes found: 28

Most common suppressions

Count	Suppression
13	clippy::too_many_arguments
7	unused_mut
2	non_upper_case_globals
2	deprecated
2	unused_imports
1	non_snake_case
1	unused_variables

Files containing suppressions

Count	File	Suppressions
5	src/server/client_session.rs	clippy::too_many_arguments, clippy::too_many_arguments, clippy::too_many_arguments, clippy::too_many_arguments, clippy::too_many_arguments
3	src/cli/dispatch.rs	deprecated, unused_mut, unused_mut
2	src/tui/app/remote.rs	unused_imports, unused_imports
2	src/server/comm_session.rs	clippy::too_many_arguments, clippy::too_many_arguments
2	src/server/client_lifecycle.rs	clippy::too_many_arguments, clippy::too_many_arguments
2	src/server.rs	unused_mut, unused_mut
2	src/main.rs	non_upper_case_globals, non_upper_case_globals
1	src/tui/info_widget.rs	deprecated
1	src/tui/app/state_ui.rs	unused_mut
1	src/server/startup_tests.rs	unused_mut
1	src/server/debug_swarm_write.rs	clippy::too_many_arguments
1	src/server/comm_sync.rs	clippy::too_many_arguments
1	src/server/comm_await.rs	clippy::too_many_arguments
1	src/server/client_actions.rs	clippy::too_many_arguments
1	src/perf.rs	non_snake_case
1	src/auth/mod.rs	unused_mut
1	src/agent/turn_loops.rs	unused_variables

TODO/FIXME/HACK debt

Count	File
9	docs/CODE_QUALITY_AUDIT_2026-04-18.md
5	src/tui/ui_tests/prepare.rs
4	src/tui/ui_tests/tools.rs
1	src/stdin_detect.rs
1	docs/MEMORY_ARCHITECTURE.md
1	docs/IOS_CLIENT.md

Highest-value improvement themes

1. Split mega-files before adding more logic. The repo has a very large number of production files far above the documented 1200 LOC ceiling, with especially acute concentration in TUI, server, provider, session, and tooling modules.
2. Break down monster functions. The biggest maintainability risk is not only file size but massive single functions like handle_remote_key_internal, handle_client, handle_server_event, run_turn_interactive, and multiple markdown/rendering paths.
3. Reduce argument fan-out in server control/session code. Repeated #[allow(clippy::too_many_arguments)] in server modules indicates missing request-context structs or narrower helper boundaries.
4. Harden failure paths in real production code. Even with clippy clean, there is still broad unwrap/expect/panic! presence, especially in tool execution, auth, server control, build, and provider code. Some of this is test-only code inside production files and should be moved out or isolated.
5. Move or isolate inline tests embedded in giant production files. Several production files carry substantial test bodies, inflating file size and panic-prone call counts.
6. Reduce test concentration. src/tui/app/tests.rs is itself a giant hotspot and should be split by domain like auth, remote, commands, rendering, and state restoration.
7. Trim suppression surface. Most suppressions are test-only clippy escapes, but the too_many_arguments suppressions in server code are architectural smell, not just lint noise.
8. Burn down deferred work markers. There are not many TODO/FIXME markers, which is good, but the remaining ones should still be converted into issues or resolved.

Suggested execution order

1. split src/server/comm_control.rs, src/server/client_lifecycle.rs, src/provider/mod.rs, src/provider/openai.rs, and TUI remote/input modules
2. extract context/request structs to eliminate too_many_arguments suppressions in server paths
3. move inline tests out of production mega-files where practical
4. replace easy production unwrap/expect hotspots with explicit error handling, starting with tool/auth/build modules
5. continue splitting TUI render and event-handling functions into domain-focused helpers