feat: cost-aware trimming + auto-escalation (T1.4 PR 2) #4

Merged

clawdie merged 1 commit from t14-pr2-trimming into main

2026-05-31 16:13:31 +02:00

clawdie commented

2026-05-31 16:13:27 +02:00

Owner

trim_to_budget() on PromptAssembly, EscalationTrigger, auto_escalate(). 51/51 tests, clippy clean.

clawdie added 1 commit 2026-05-31 16:13:28 +02:00

feat: cost-aware trimming + auto-escalation (T1.4 PR 2) 79c15cd4df

Behavior changes for cache-first prompt discipline:

- PromptAssembly::trim_to_budget(CostMode): trims volatile scratch
  first, then oldest appendable log entries, to fit within cost mode
  budget. Prefix is never trimmed. Returns count of items removed.

- EscalationTrigger enum: BudgetExceeded + CompactionInsufficient
  variants for auto-escalation decisions.

- auto_escalate(): returns Some(next_mode) if trigger warrants
  escalation, None if already at ceiling or trigger doesn't apply.

- 11 new tests: trim budget scenarios (under/over/deterministic/
  prefix-preserved), escalation chain (fast→smart→max→ceiling),
  compaction triggers.

No scheduler injection, no cache warming — PR 3 follows.

Build: pass | Tests: 51/51 green | Clippy: clean | Fmt: clean