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skills/docs/engineering
Matt Pocock fa1e3227fb feat: give ask-matt the phase boundary decision tree
Replaces the two-bullet `Crossing sessions` section with all five options
at a phase boundary — continue, /clear, /handoff, subagent, /compact —
and discloses the ordered tree into a new PHASE-BOUNDARIES.md.

Corrections that come with it:

- /handoff was oversold as the general bridge between context windows.
  It is narrow: a new harness, a new directory, a colleague, or a side
  task forked mid-phase. What it buys is portability.
- /compact is the default at the bottom of the tree, not the first reach.
- Continue and subagent were missing branches entirely.

Context hygiene's escape hatch now says /compact rather than /handoff,
and the smart zone figure moves from ~120k to ~150k tokens.

Resolves the T5 grilling ticket on the v1.2 release map.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 10:10:33 +01:00
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