Merge remote-tracking branch 'origin/main' into garrytan/plan-tune-skill

Conflicts resolved:
- VERSION / package.json: keep 1.0.0.0 (our v1 milestone bump from
  commit 18fc95c0, supersedes main's 0.18.4.0).
- CHANGELOG.md: preserved both entries in chronological order — v1.0.0.0
  (writing-style + throughput receipts) above v0.18.4.0 (codex + Apple
  Silicon hardening). No gaps in sequence: 1.0.0.0 → 0.19.0.0 → 0.18.4.0
  → 0.18.3.0 → ...

Main added v0.18.4.0 (#1056): codex + Apple Silicon hardening wave.

Regenerated all SKILL.md files after merge so they pick up both main's
template changes AND our v1 writing-style + question-tuning additions.

Full free test suite: 1288 pass, 0 fail, 113 skip across 37 files, 8555
expect() calls.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

plan-eng-review/SKILL.md

@@ -752,7 +752,7 @@ If the user asks you to compress or the system triggers context compaction: Step
 * I want code that's "engineered enough" — not under-engineered (fragile, hacky) and not over-engineered (premature abstraction, unnecessary complexity).
 * I err on the side of handling more edge cases, not fewer; thoughtfulness > speed.
 * Bias toward explicit over clever.
-* Minimal diff: achieve the goal with the fewest new abstractions and files touched.
+* Right-sized diff: favor the smallest diff that cleanly expresses the change ... but don't compress a necessary rewrite into a minimal patch. If the existing foundation is broken, say "scrap it and do this instead."
 
 ## Cognitive Patterns — How Great Eng Managers Think
 
@@ -1238,7 +1238,7 @@ THE PLAN:
 ```bash
 TMPERR_PV=$(mktemp /tmp/codex-planreview-XXXXXXXX)
 _REPO_ROOT=$(git rev-parse --show-toplevel) || { echo "ERROR: not in a git repo" >&2; exit 1; }
-codex exec "<prompt>" -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached 2>"$TMPERR_PV"
+codex exec "<prompt>" -C "$_REPO_ROOT" -s read-only -c 'model_reasoning_effort="high"' --enable web_search_cached < /dev/null 2>"$TMPERR_PV"
 ```
 
 Use a 5-minute timeout (`timeout: 300000`). After the command completes, read stderr:

plan-eng-review/SKILL.md.tmpl

@@ -45,7 +45,7 @@ If the user asks you to compress or the system triggers context compaction: Step
 * I want code that's "engineered enough" — not under-engineered (fragile, hacky) and not over-engineered (premature abstraction, unnecessary complexity).
 * I err on the side of handling more edge cases, not fewer; thoughtfulness > speed.
 * Bias toward explicit over clever.
-* Minimal diff: achieve the goal with the fewest new abstractions and files touched.
+* Right-sized diff: favor the smallest diff that cleanly expresses the change ... but don't compress a necessary rewrite into a minimal patch. If the existing foundation is broken, say "scrap it and do this instead."
 
 ## Cognitive Patterns — How Great Eng Managers Think