self_debug passes ad-hoc timeout=600 to run_claude_session, silently tightening the declared 900s deadline

[adrianwedd]

Same bug class as #291, one instance left behind deliberately when #294 was scoped (agreed on review: file separately).

What: mind.py (self_debug dispatch, ~line 3498) calls run_claude_session("self_debug", ..., timeout=600). brain._DEADLINE_S declares 900s for self_debug. Since #294, run_claude_session(timeout=None) defaults to the kind's declared deadline — the ad-hoc 600 is now the only remaining call-site override, and it silently wins, so a self-debug run that would have finished between 600s and 900s is killed and recorded as a failure.

Why it matters: #291 showed exactly this shape kills a feature invisibly for weeks — consolidation failed at precisely 180.1s every night because an ad-hoc override defeated the per-kind deadline. The single-deadline-source rule exists so brain._DEADLINE_S is authoritative.

Fix: delete the timeout=600 argument at the self_debug call site (let it default to None → 900), and optionally add a repo-wide test asserting no production caller of run_claude_session passes a literal timeout= (test overrides excepted), so the class is closed rather than the instance.

Refs: #291, #294 (5b62a3da).

[adrianwedd]

Grooming 2026-08-26 — confirmed still present on master 5b9070de

src/pxh/mind.py:3581:  result = run_claude_session(
src/pxh/mind.py:3584:      timeout=600,

brain._DEADLINE_S["self_debug"] is 900. The ad-hoc override still wins, so a
self-debug run finishing between 600 s and 900 s is killed and recorded as a
failure — the exact shape that hid #291 for weeks.

Confirmed as the last such override: run_claude_session( appears at no
other production call site passing a literal timeout=. So the class-closing
test proposed in the body ("no production caller passes a literal timeout=")
would go green immediately after deleting this one argument, which makes it
cheap to add and worth adding — the point is that the next one can't land.

Two-line fix. Good first-PR candidate.