Compression (#1286 — the real root causes, two independent bugs):
- exec path prefixed EVERY command with the zsh preamble (setopt nonomatch
noequals;) BEFORE classification, so no starts_with-based pattern matcher
(ls, find, curl, ...) ever fired on macOS/zsh — pattern compression silently
degraded to the generic terse fallback. The preamble now applies at spawn
time only. Measured: ls -la 6% -> 71% saved, entries preserved.
- the terse stage displaced a smaller pattern result on quality_passed alone;
it now only wins when actually smaller. Regression test added.
- side effect: git log --oneline is now correctly owned by the VCS compressor
(full history verbatim) instead of the lossy generic pass.
Hooks/steering:
- #1288: UserPromptSubmit emits a one-line tool-precedence additionalContext
(config prompt_reinject = auto|on|off; auto = only under shadow_mode), so
the ctx_* mandate always post-dates session-level harness instructions.
- #1285: rewrite-hook passthrough now writes a native_shell_passthrough
metering entry (synchronous append — hooks have no Tokio reactor), making
native-tool leakage visible in the per-tool dashboard table.
- #1289: legacy versioned-marker rule files (rules-v9 era) are recognized as
lean-ctx-owned by rules dedup when wholly lean-ctx-written; user-extended
copies keep the report-only treatment. Test added.
Metric honesty:
- #1284: stats headline scoped to "of metered lean-ctx volume".
- #1287: the "re-reads ~13 tokens" claim is scoped to unchanged full/auto
re-reads across all rule templates (RULES_VERSION 8 -> 9; artifacts
regenerated); signatures/map variant stubs remain open by design.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Yves Gugger
30a0461dcb