feat(monitor): infer an agent's task from its ticket worktree (ticket-107)

[tom-sapletta-com]

Problem

monag status showed every agent as task: unknown (process only) unless started through monag run. Asked "are tasks being executed autonomously?", monag could show processes but not what they work on.

Change

inferred_task() in monitor.py: when an agent reported no task, look at the working directories of the agent and its children; a canonical <primary>/.worktrees/ticket-NNN--slug yields inferred from worktree: <repo> ticket-NNN: <intent summary> (summary whitespace-collapsed, 100 chars, up to 3 tickets). Reported tasks still win; everything else stays unknown (process only). It is labelled as an observation, not ownership or progress.

Evidence

Live run on this host: two Claude agents now show monag ticket-107: … and willmux ticket-222: „uruchom X w/do Y” is not an installation; agents outside ticket worktrees stay unknown.
Tests: 5 new (fake /proc, missing/broken intent); full suite 471 passed, 1 skipped. Governance GOV-PASS. Ruff clean on the new test.

Ticket: ticket-107

🤖 Generated with Claude Code

[ifuri-validator-agent]

Validator approval after policy checks for exact head 93d9a655c10f3ffa4f10fdb3f061c60c322a2097.

Ticket: ticket-107
Correlation ID: local-semcod-monag-pr-130-ticket-107
Model: openai/cursor-auto
Reviewed diff chunks: 1
Advisory LLM verdict: APPROVE
Advisory summary: Reviewed all 1 diff chunk(s). The implementation cleanly extracts worktree paths using a well-crafted regex and robustly parses the intent.json file to infer agent tasks, safely handling potential IO, decoding, or structural errors. The fallback to 'unknown' is preserved.
Advisory findings: none
The LLM output above is advisory and was not used as the approval trust root.
Semantic review prerequisite: not_required; policy 676cb4516bbfed2a000e40b9b1b6e4a430ecc761ec546aeb53d721a1905cfdd7.

Actual PR impact radar

Exact range: 07c3e575e440e865a25adfadb9ea12afa7e798d6...93d9a655c10f3ffa4f10fdb3f061c60c322a2097
Change digest: d1117fd9f3a0129a6f2f8d5921e9f890654b4d8b49abc3845ec285898b1a243b
Score: 56/100 (L), estimated 72 min, split recommended: true
Affected services/components: repository-wide/unclassified

Machine-readable radar JSONL and SVG

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Merge will be attempted after this approval when explicitly authorized. ## Decision record (recomputable)

DECISION D-107-2587
TICKET ticket-107
HEAD_SHA 93d9a655c10f3ffa4f10fdb3f061c60c322a2097
CORRELATION_ID local-semcod-monag-pr-130-ticket-107
ACTOR agent:ifuri-validator-agent[bot]
APPLIED_RULE P-CORE-015
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VERDICT APPROVE AUTHORITY DETERMINISTIC
REJECTED REQUEST_CHANGES BECAUSE NO_UNSAFE_CHANGE_REASON_FOUND
ADVISORY llm_verdict = "APPROVE" MODEL "openai/cursor-auto"
ASSERT VERDICT_AUTHORITY != "ADVISORY"