feat: native OpenClaw skills + ClaHub publishing (v0.15.10.0) (#832)

* feat: add 4 native OpenClaw skills for ClaHub publishing

Hand-crafted methodology skills for the OpenClaw wintermute workspace:
- gstack-openclaw-office-hours (375 lines) — 6 forcing questions, startup + builder modes
- gstack-openclaw-ceo-review (193 lines) — 4 scope modes, 18 cognitive patterns
- gstack-openclaw-investigate (136 lines) — Iron Law, 4-phase debugging
- gstack-openclaw-retro (301 lines) — git analytics, per-person praise/growth

Pure methodology, no gstack infrastructure. All frontmatter uses single-line
inline JSON for OpenClaw parser compatibility.

* feat: add AGENTS.md dispatch section with behavioral rules

Ready-to-paste section for OpenClaw AGENTS.md with 3 iron-clad rules:
1. Always spawn sessions, never redirect user to Claude Code
2. Resolve repo path or ask, don't punt
3. Autoplan runs end-to-end, reports back in chat

Includes full dispatch routing (Simple/Medium/Heavy/Full/Plan tiers).

* chore: clear OpenClaw includeSkills — native skills replace generated

Native ClaHub skills replace the gen-skill-docs pipeline output for
these 4 skills. Updated test to validate empty includeSkills array.

* docs: ClaHub install instructions + dispatch routing rules

- README: add Native OpenClaw Skills section with clawhub install command
- OPENCLAW.md: update dispatch routing with behavioral rules, update
  native skills section to reference ClaHub

* chore: bump version and changelog (v0.15.10.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: add gstack-upgrade to OpenClaw dispatch routing

Ensures "upgrade gstack" routes to a Claude Code session with
/gstack-upgrade instead of Wintermute trying to handle it conversationally.

* fix: stop tracking 58MB compiled binary bin/gstack-global-discover

Already in .gitignore but was tracked due to historical mistake.
Same issue as browse/dist/ and design/dist/. The .ts source is right
next to it and ./setup builds from source for every platform.

* test: detect compiled binaries and large files tracked by git

Two new tests in skill-validation:
- No Mach-O or ELF binaries tracked (catches accidental git add of compiled output)
- No files over 2MB tracked (catches bloated binaries sneaking in)

Both print the exact git rm --cached command to fix the issue.

* fix: ClaHub → ClawHub (correct spelling)

* docs: add ClawHub publishing instructions to CLAUDE.md

Documents the clawhub publish command (not clawhub skill publish),
auth flow, version bumping, and verification.

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -401,6 +401,29 @@ Also when running targeted E2E tests to debug failures:
 - Never `pkill` running eval processes and restart — you lose results and waste money
 - One clean run beats three killed-and-restarted runs
 
+## Publishing native OpenClaw skills to ClawHub
+
+Native OpenClaw skills live in `openclaw/skills/gstack-openclaw-*/SKILL.md`. These are
+hand-crafted methodology skills (not generated by the pipeline) published to ClawHub
+so any OpenClaw user can install them.
+
+**Publishing:** The command is `clawhub publish` (NOT `clawhub skill publish`):
+
+```bash
+clawhub publish openclaw/skills/gstack-openclaw-office-hours \
+  --slug gstack-openclaw-office-hours --name "gstack Office Hours" \
+  --version 1.0.0 --changelog "description of changes"
+```
+
+Repeat for each skill: `gstack-openclaw-ceo-review`, `gstack-openclaw-investigate`,
+`gstack-openclaw-retro`. Bump `--version` on each update.
+
+**Auth:** `clawhub login` (opens browser for GitHub auth). `clawhub whoami` to verify.
+
+**Updating:** Same `clawhub publish` command with a higher `--version` and `--changelog`.
+
+**Verification:** `clawhub search gstack` to confirm they're live.
+
 ## Deploying to the active skill
 
 The active skill lives at `~/.claude/skills/gstack/`. After making changes: