multi-agent-mux/.agents/reports/canary-projects-multi-agent-mux-creator-cline/report-2f64681f.md

Cross-Code Review Report: B-10 — agent_identities tier-3 신원 캐시 완전 제거 (Option A)

Job ID: 2f64681f Reviewer: cline Date: 2026-08-17 Changeset: 12 files, +99/-114 lines (git diff HEAD)

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1. Changeset Overview

The B-10 backlog item (Option A) eliminates the dead agent_identities reading path and tier-3 fallback, removes PyYAML dependency from workspace_uuid.py, and simplifies UUID lookup to a 2-tier resolution (tier-1: per-row own id → tier-2: adapter discover()).

Files Changed (12 files)

File	Change	Lines
lib.sh	Comment updates: 3-tier → 2-tier description	+4/-9
lib_py/agents/base.py	Docstring added to identity_cache_fields (retention rationale)	+4/-0
lib_py/verify_session.py	import yaml moved from top-level to YAML fallback branch	+2/-1
lib_py/workspace_uuid.py	Tier-3 fallback block removed (32 lines); sqlite3 import removed	+1/-33
multi-agent-mux-monitor/SKILL.md	"### D. Stale UUID" detailed section removed	+0/-10
multi-agent-mux-monitor/scripts/reconcile.sh	Drift D detection code removed (37 lines)	+0/-37
multi-agent-mux-resume/SKILL.md	UUID resolution order updated to 2-tier	+4/-7
multi-agent-mux-status/SKILL.md	Drift class D table row removed	+0/-1
multi-agent-mux-stop/scripts/stop_session.sh	Cache clearing code removed (6 lines); comment updated	+1/-7
IMPROVEMENTS.md	B-10 moved from open to completed; counts updated	+12/-9
VERSIONS.md	B-10 entry added under v2.0.0 item 7	+7/-0
tests/test_tier1_unit.py	3 new regression tests (B-10 guards)	+64/-0

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2. Verification Results

2.1 Lint (린트) — ✅ PASS

Check	Method	Result
bash -n lib.sh	Syntax check	✅ OK
bash -n reconcile.sh	Syntax check	✅ OK
bash -n stop_session.sh	Syntax check	✅ OK
py_compile workspace_uuid.py	Python compile check	✅ OK
py_compile verify_session.py	Python compile check	✅ OK
py_compile base.py	Python compile check	✅ OK
agent_identities in production code	grep -rn across 4 target files	✅ NO MATCHES (even in comments)
import yaml in workspace_uuid.py	grep -n yaml	✅ NO MATCHES — PyYAML dependency removed
import yaml in verify_session.py	grep -n import yaml	✅ Only at line 50 (inside YAML fallback branch)
IMPROVEMENTS.md header counts	grep + wc -l	✅ 3 open (1 arch + 2 edge), 22 completed
Section 2 item count	sed + grep -c	✅ 2 items (B-13, B-9) — B-10 removed
Section 5 item count	sed + grep -c	✅ 22 entries (matches header list)
B-10 in completed list	grep B-10	✅ In header line 6, section 5 detailed entry, update date
VERSIONS.md B-10 entry	grep -n B-10	✅ Line 74, item 7 under v2.0.0
3 new B-10 tests	grep -n 'def test_b10'	✅ All 3 present (lines 343, 364, 382)
identity_cache_fields retention	grep -rn in adapters	✅ Retained in base.py + 4 adapters with docstring

2.2 Operability (동작성) — ✅ PASS

Check	Method	Result
B-10 regression tests	pytest -k b10	✅ 3/3 PASSED (0.04s)
test_b10_no_agent_identities_reader_in_production	Unit test	✅ PASSED — guards against agent_identities read path resurrection
test_b10_workspace_uuid_has_no_yaml_import	AST analysis	✅ PASSED — guards against import yaml reintroduction (including lazy)
test_b10_find_workspace_uuid_runs_without_pyyaml	Subprocess stub	✅ PASSED — UUID resolution path completes without PyYAML
Full regression suite	pytest tests/ -v	✅ 266/266 PASS (100%) in 411.09s

2.3 Loss (유실) — ✅ PASS

Check	Method	Result
Tier-3 fallback removed from workspace_uuid.py	git diff	✅ 32-line block removed; sqlite3 import removed
Drift D removed from reconcile.sh	git diff	✅ 37-line block removed (claude/agy/hermes/cline stale UUID checks)
Cache clearing removed from stop_session.sh	git diff	✅ 6-line block removed (agent_identities purge on --purge-conversation)
PyYAML removed from workspace_uuid.py	grep yaml	✅ No yaml references at all
PyYAML moved to lazy import in verify_session.py	git diff	✅ import yaml now inside YAML fallback try block (line 50)
UUID resolution simplified to 2-tier	Code inspection	✅ tier-1 (per-row own id) → tier-2 (adapter discover()) → print('')
identity_cache_fields retained intentionally	grep + docstring	✅ Retained with docstring explaining future cache write path need
SKILL.md docs updated (resume, monitor, status)	git diff	✅ All 3 docs updated to reflect 2-tier resolution and drift D removal
Comments updated (lib.sh, stop_session.sh)	git diff	✅ "3-tier" → "2-tier", tier-3 references removed
No production code reads agent_identities	Regression test	✅ test_b10_no_agent_identities_reader_in_production guards this

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3. Minor Non-Blocking Observations

1. Monitor SKILL.md line 175: The "Drift responses" summary list still contains "- D. Stale UUID: report only, no YAML change" even though the detailed "### D. Stale UUID" section and the reconcile.sh drift D implementation were both removed. This summary reference was outside the diff hunk and was not cleaned up. Non-blocking — the implementation is correctly removed; only a documentation summary line is stale. Consider removing line 175 in a future cleanup.

2. identity_cache_fields retention: The identity_cache_fields property is retained in base.py and all 4 adapters (claude, agy, hermes, cline) with a Korean docstring explaining that while the read path has zero production consumers post-B-10, it remains the sole schema description needed when a cache write path is introduced. This is an intentional, documented design decision — not dead code to remove.

3. import yaml in verify_session.py: The yaml import is now inside a conditional branch (YAML fallback at line 50), only executed when .db doesn't contain orchestrator_uuids and the YAML file exists. This follows the existing state.py precedent for lazy YAML imports. The UUID resolution path can complete without PyYAML when the .db file has the data, as verified by test_b10_find_workspace_uuid_runs_without_pyyaml.

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4. Verdict

The B-10 backlog item has been correctly resolved via Option A (complete elimination):

• agent_identities read paths removed from all 3 production locations: workspace_uuid.py (tier-3 fallback, 32 lines), reconcile.sh (drift D detection, 37 lines), stop_session.sh (cache clearing on purge, 6 lines).
• PyYAML dependency removed from workspace_uuid.py (no import yaml at all) and deferred to a lazy conditional import in verify_session.py (YAML fallback branch only).
• UUID resolution simplified to a clean 2-tier model: tier-1 (per-row own id from herdr_sessions[]) → tier-2 (adapter discover() on-disk scan) → empty result.
• Regression guards (3 new tests) protect against resurrection of the agent_identities read path, reintroduction of import yaml in workspace_uuid.py (including lazy imports via AST analysis), and runtime PyYAML dependency in the resolution path.
• Documentation updated consistently across 6 files: lib.sh comments, 3 SKILL.md files, IMPROVEMENTS.md (B-10 moved to completed, counts updated to 3 open / 22 completed), VERSIONS.md (entry 7 under v2.0.0).
• Full regression suite passes: 266/266 PASS (100%) in 411.09s.
• The identity_cache_fields property is intentionally retained with documentation for future cache write path use.

[VERDICT: PASS]