refactor(opus-4.7): split overlay, align routing, fix trailer fallback

Follow-up to wintermute's initial Opus 4.7 migration commit (addresses
ship-quality review findings before v1.6.1.0 release).

Overlay split (model-overlays/):
  - Move 4 Opus-4.7-specific nudges (Fan out, Effort-match, Batch your
    questions, Literal interpretation) from claude.md into new
    opus-4-7.md with {{INHERIT:claude}}
  - claude.md now holds only model-agnostic nudges (Todo discipline,
    Think before heavy, Dedicated tools over Bash)
  - Prevents Opus-4.7-specific guidance leaking onto Sonnet/Haiku
  - Uses existing {{INHERIT:claude}} mechanism at
    scripts/resolvers/model-overlay.ts:28-43

scripts/models.ts:
  - Add opus-4-7 to ALL_MODEL_NAMES
  - resolveModel: claude-opus-4-7-* variants route to opus-4-7,
    all other claude-* variants continue to route to claude

scripts/resolvers/utility.ts:
  - Update coAuthor trailer fallback: Opus 4.6 -> Opus 4.7
    (fallback was missed in the initial migration commit)

scripts/resolvers/preamble/generate-routing-injection.ts:
  - Align policy with new SKILL.md.tmpl: soft "when in doubt, invoke"
    instead of hard "ALWAYS invoke... Do NOT answer directly"
  - Replace stale /checkpoint reference with /context-save +
    /context-restore (skills were renamed in v1.0.1.0)
  - Expand route coverage to match full skill inventory:
    /plan-devex-review, /qa-only, /devex-review, /land-and-deploy,
    /setup-deploy, /canary, /open-gstack-browser,
    /setup-browser-cookies, /benchmark, /learn, /plan-tune, /health

scripts/resolvers/preamble/generate-voice-directive.ts:
  - Voice example closing: "Want me to ship it?" -> "Want me to fix it?"
  - Preserves directness while routing through review gates

SKILL.md.tmpl:
  - Add routing triggers for skills that were missing from the list:
    /plan-devex-review, /qa-only, /devex-review, /land-and-deploy,
    /setup-deploy, /canary, /open-gstack-browser,
    /setup-browser-cookies, /benchmark, /learn, /plan-tune, /health
  - Within Opus 4.7 overlay, added scope boundary to
    "Literal interpretation" nudge ("fix tests that this branch
    introduced or is responsible for")
  - Added pacing exception to "Batch your questions" nudge so skills
    that require one-question-at-a-time pacing still win

Follow-up commit will regenerate SKILL.md files + update goldens.

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

scripts/models.ts

@@ -13,6 +13,7 @@
 
 export const ALL_MODEL_NAMES = [
   'claude',
+  'opus-4-7',
   'gpt',
   'gpt-5.4',
   'gemini',
@@ -51,6 +52,7 @@ export function resolveModel(input: string): Model | null {
   if (/^gpt-5\.4(-|$)/.test(s)) return 'gpt-5.4';
   if (/^gpt(-|$)/.test(s)) return 'gpt';
   if (/^o[0-9]+(-|$)/.test(s)) return 'o-series';
+  if (/^claude-opus-4-7(-|$)/.test(s)) return 'opus-4-7';
   if (/^claude(-|$)/.test(s)) return 'claude';
   if (/^gemini(-|$)/.test(s)) return 'gemini';
 

scripts/resolvers/preamble/generate-routing-injection.ts

@@ -20,23 +20,44 @@ If A: Append this section to the end of CLAUDE.md:
 
 ## Skill routing
 
-When the user's request matches an available skill, ALWAYS invoke it using the Skill
-tool as your FIRST action. Do NOT answer directly, do NOT use other tools first.
-The skill has specialized workflows that produce better results than ad-hoc answers.
+When the user's request matches an available skill, invoke it via the Skill tool. The
+skill has multi-step workflows, checklists, and quality gates that produce better
+results than an ad-hoc answer. When in doubt, invoke the skill. A false positive is
+cheaper than a false negative.
 
 Key routing rules:
-- Product ideas, "is this worth building", brainstorming → invoke office-hours
-- Bugs, errors, "why is this broken", 500 errors → invoke investigate
-- Ship, deploy, push, create PR → invoke ship
-- QA, test the site, find bugs → invoke qa
-- Code review, check my diff → invoke review
-- Update docs after shipping → invoke document-release
-- Weekly retro → invoke retro
-- Design system, brand → invoke design-consultation
-- Visual audit, design polish → invoke design-review
-- Architecture review → invoke plan-eng-review
-- Save progress, checkpoint, resume → invoke checkpoint
-- Code quality, health check → invoke health
+- Product ideas, "is this worth building", brainstorming → invoke /office-hours
+- Strategy, scope, "think bigger", "what should we build" → invoke /plan-ceo-review
+- Architecture, "does this design make sense" → invoke /plan-eng-review
+- Design system, brand, "how should this look" → invoke /design-consultation
+- Design review of a plan → invoke /plan-design-review
+- Developer experience of a plan → invoke /plan-devex-review
+- "Review everything", full review pipeline → invoke /autoplan
+- Bugs, errors, "why is this broken", "wtf", "this doesn't work" → invoke /investigate
+- Test the site, find bugs, "does this work" → invoke /qa (or /qa-only for report only)
+- Code review, check the diff, "look at my changes" → invoke /review
+- Visual polish, design audit, "this looks off" → invoke /design-review
+- Developer experience audit, try onboarding → invoke /devex-review
+- Ship, deploy, create a PR, "send it" → invoke /ship
+- Merge + deploy + verify → invoke /land-and-deploy
+- Configure deployment → invoke /setup-deploy
+- Post-deploy monitoring → invoke /canary
+- Update docs after shipping → invoke /document-release
+- Weekly retro, "how'd we do" → invoke /retro
+- Second opinion, codex review → invoke /codex
+- Safety mode, careful mode, lock it down → invoke /careful or /guard
+- Restrict edits to a directory → invoke /freeze or /unfreeze
+- Upgrade gstack → invoke /gstack-upgrade
+- Save progress, "save my work" → invoke /context-save
+- Resume, restore, "where was I" → invoke /context-restore
+- Security audit, OWASP, "is this secure" → invoke /cso
+- Make a PDF, document, publication → invoke /make-pdf
+- Launch real browser for QA → invoke /open-gstack-browser
+- Import cookies for authenticated testing → invoke /setup-browser-cookies
+- Performance regression, page speed, benchmarks → invoke /benchmark
+- Review what gstack has learned → invoke /learn
+- Tune question sensitivity → invoke /plan-tune
+- Code quality dashboard → invoke /health
 \`\`\`
 
 Then commit the change: \`git add CLAUDE.md && git commit -m "chore: add gstack skill routing rules to CLAUDE.md"\`
@@ -46,4 +67,3 @@ Say "No problem. You can add routing rules later by running \`gstack-config set
 
 This only happens once per project. If \`HAS_ROUTING\` is \`yes\` or \`ROUTING_DECLINED\` is \`true\`, skip this entirely.`;
 }
-

scripts/resolvers/preamble/generate-voice-directive.ts

@@ -56,7 +56,7 @@ Avoid filler, throat-clearing, generic optimism, founder cosplay, and unsupporte
 - End with what to do. Give the action.
 
 **Example of the right voice:**
-"auth.ts:47 returns undefined when the session cookie expires. Your users hit a white screen. Fix: add a null check and redirect to /login. Two lines. Want me to ship it?"
+"auth.ts:47 returns undefined when the session cookie expires. Your users hit a white screen. Fix: add a null check and redirect to /login. Two lines. Want me to fix it?"
 Not: "I've identified a potential issue in the authentication flow that may cause problems for some users under certain conditions. Let me explain the approach I'd recommend..."
 
 **Final test:** does this sound like a real cross-functional builder who wants to help someone make something people want, ship it, and make it actually work?`;

scripts/resolvers/utility.ts

@@ -369,7 +369,7 @@ Minimum 0 per category.
 export function generateCoAuthorTrailer(ctx: TemplateContext): string {
   const { getHostConfig } = require('../../hosts/index');
   const hostConfig = getHostConfig(ctx.host);
-  return hostConfig.coAuthorTrailer || 'Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>';
+  return hostConfig.coAuthorTrailer || 'Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>';
 }
 
 export function generateChangelogWorkflow(_ctx: TemplateContext): string {