The fix in 644d88ab changed the recovery path from client.delete_collection
to shutil.rmtree (chromadb 1.5.x delete_collection is broken on corrupted
state). The test still asserted the old behavior.
The wipe path called self._init_vector_store() which re-invoked
_validate_collection_dim, causing infinite recursion (RecursionError)
when the dim mismatch test ran with the mock embedding provider.
Re-initialize the vector store INLINE after the rmtree wipe so the
fresh collection is created without going through the validator
again.
When the existing collection has embeddings from a different
embedding provider (e.g. Gemini 3072-dim vs local 384-dim), the
prior approach of calling client.delete_collection() fails with
'RustBindingsAPI object has no attribute bindings' in chromadb 1.5.x
when the underlying state is corrupted. rmtree is reliable and
re-creates a fresh empty collection.
Also fixes:
- 'The truth value of an empty array is ambiguous' on numpy 2.x
by using try/except around len() instead of truthiness check
- WinError 32 on rmtree by closing the chroma client first
Verified: tests/test_rag_phase4_final_verify.py passes in isolation
in 7.75s after this fix. The test still fails in batch context due
to a separate io_pool race condition (multiple _sync_rag_engine
calls collide when the test sets rag_enabled, rag_source, and
rag_emb_provider in sequence). The race is in app_controller.py
and is out of scope for this defensive fix.
Note: tests/test_rag_engine.py has explicit unit tests for
test_rag_collection_dim_mismatch_recreates_collection and
test_rag_collection_dim_match_preserves_collection which
exercise this code path.
One addition to conductor/code_styleguides/python.md §8
"AI-Agent Specific Conventions":
- **No diagnostic noise in production code (Added
2026-06-09).** `sys.stderr.write(f"[XYZ_DIAG] ...") lines
in src/*.py are technical debt. The right place for
one-time investigation output is tests/artifacts/<test>.diag.log
(a log file) or a standalone /tmp/diag_<name>.py script.
If you must instrument production code, the diag lines
are part of the same atomic commit as the fix.
- **Test files ARE allowed to be diagnostic.** The rule
applies to src/*.py only; tests/test_*.py may use
print(..., file=sys.stderr) freely.
Markdown only. No code modified.
Two additions to conductor/workflow.md §"Known Pitfalls":
1. **Isolated-Pass Verification Fallacy (Added 2026-06-09)** —
the rule that a test passing in isolation but failing in
batch is FAILING. The only verification that matters for
live_gui tests is the batch run. This is the flip side of
the existing "Live_gui Test Fragility (Authoring-Side)"
rule. Cross-references that rule.
2. **Process Anti-Patterns (Added 2026-06-09)** — 8-rule
summary list, with cross-reference to AGENTS.md for the
full ruleset. The 8 patterns are: Deduction Loop,
Report-Instead-of-Fix, Scope-Creep Track-Doc,
Inherited-Cruft, Diagnostic Noise in Production, Premature
Surrender, Verbose Commit Message, Isolated-Pass
Verification Fallacy.
Markdown only. No code modified. Cross-references
AGENTS.md (the load-bearing agent doc) for the full text
of each pattern.
Three surgical fixes to conductor/edit_workflow.md:
1. **§2 "Verify Before Editing"** — removed the leftover
`git checkout -- src/gui_2.py` instruction. The user's
commit `4eba059e unfuck edit workflow` removed most of
the git checkout nuke instructions but missed §2. The
revised §2 now says: read the contract (function signature,
yield shape, return type) before editing, and DO NOT use
`git checkout` to revert. Ask the user.
2. **§3 "Reading Before Editing"** — added the line-number
offset check. `set_file_slice` uses 1-indexed inclusive
`start_line`/`end_line`; off-by-one is a common silent
failure. The rule is now: confirm the exact line range
with `get_file_slice` first.
3. **§8 "set_file_slice IS Valid for Multi-Line Content
(Revised 2026-06-09)"** — replaced the wrong rule
("Do not use set_file_slice for multi-line content") with
the correct rule: set_file_slice IS valid for 3-10 line
surgical edits, with a tool-selection guide (which tool
for which job), a mandatory contract-change check
(search for callers of the symbol being changed; update
all callers in the same atomic commit if the public
interface changes), and a mandatory whitespace-and-EOL
rule (preserve line ending, indentation, and line count).
4. **§9 "No Diagnostic Noise in Production Code
(Added 2026-06-09)"** — new section. Diag stderr goes
to log files or /tmp scripts, NOT src/*.py. If you must
add diag lines to production code, they are part of the
same atomic commit as the fix — they do not live
uncommitted in the working tree.
5. **"If set_file_slice produces wrong indentation"** —
new handler in the Step-by-Step Workflow. Tells the
agent: you wrote the wrong indent; the tool did what
you asked; re-read the file with get_file_slice; do
NOT use git checkout to revert.
These are the rule corrections the user demanded after
the Tier-2's bad set_file_slice + git nuke + diag-noise
behavior. Markdown only. No code modified.
The user explicitly called out the bad patterns the agents
(Tier-2 and the parent session's Tier-1) have been exhibiting.
This commit updates AGENTS.md to filter them out at the
load-bearing agent doc level (the first file any agent reads).
Three changes:
1. **Revised the `set_file_slice` rule on line 38** of the
Critical Anti-Patterns. The previous rule said "Do not use
set_file_slice for multi-line content" — that was wrong.
`set_file_slice` IS valid for multi-line content, provided
the agent verifies the exact byte offsets with `get_file_slice`
and checks for contract changes (function signature, yield
shape, return type). The full revised rule is in
`conductor/edit_workflow.md §8`.
2. **Added "No diagnostic noise in production code"** to the
Critical Anti-Patterns. The pattern: agent adds
`sys.stderr.write(f"[RAG_DIAG] ...") to src/*.py` for
debugging, then "reverts everything" but leaves the diag
lines uncommitted. Next agent runs git status, sees the
diag lines, either commits them by accident or spends 10 min
cleaning them up. The rule: diag goes to log files or
/tmp scripts, NOT src/*.py.
3. **Added "No loop, no scope-creep, no report-instead-of-fix"**
to the Critical Anti-Patterns. The 200-line status report
is a confession, not a fix. The 5-phase "future track"
document for a 1-line fix is scope-creep. The "I am not
going to attempt another fix without your direction"
surrender is allowed ONLY if the agent has already
read-predicted-instrumented-run-captured.
4. **Added a new section: "Process Anti-Patterns (Added
2026-06-09)"** with 8 numbered anti-patterns, each with
a Symptom, Rule, and reference. The 8 patterns are the
ones the user explicitly called out: Deduction Loop,
Report-Instead-of-Fix, Scope-Creep Track-Doc,
Inherited-Cruft, Diagnostic Noise in Production, Premature
Surrender, Verbose Commit Message, Isolated-Pass
Verification Fallacy.
These are the rules the user is filtering out of LLM training
data noise. The full ruleset is the source of truth; AGENTS.md
is the load-bearing entry point.
No code modified. Markdown only.
ed
conductor-tier2