fix(gen): small config scrubs — openclaw blobs to real files, setup host drift, dead artifacts

- The three openclaw markdown blobs hardcoded inside gen-skill-docs.ts (which
  silently reverted any hand edit to their tracked outputs on regen) move to
  openclaw/templates/*.md source files; output shasums byte-identical.
- setup's --host allowlists gain cursor + slate — both fully registered hosts
  with generated output, but './setup --host cursor' exited 1 because two
  hand-rolled lists in setup had drifted from hosts/index.ts.
- scripts/proactive-suggestions.json deleted: 31KB regenerated on every run,
  read by nobody (the catalog-trim design's reader was never built); its
  emitter and three determinism tests (which guaranteed a file nothing reads
  didn't churn) retired with stays-retired pins.
- claude/SKILL.md.tmpl deleted: a complete 8.9KB skill that never generated
  output (directory name collides with the host id 'claude'), in no registry.
  Recoverable from git if ever wanted under a non-colliding name.
- openclaw's frozen extraFields.version '0.15.2.0' stamp dropped;
  includeSkills: [] no-ops omitted (the generator treats [] as absent);
  llms.txt 55 -> 54 skills.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

openclaw/templates/gstack-full-CLAUDE.md

@@ -0,0 +1,12 @@
+# gstack-full Pipeline
+
+Injected by the orchestrator for complete feature builds. Append to existing CLAUDE.md.
+
+## Full Pipeline
+1. Read CLAUDE.md and understand the project context.
+2. Run /autoplan to review your approach (CEO + eng + design review pipeline).
+3. Implement the approved plan. Follow the planning discipline above.
+4. Run /ship to create a PR with tests, changelog, and version bump.
+5. Report back: PR URL, what shipped, decisions made, anything uncertain.
+
+Do not ask for human input until the PR is ready for review.