feat(install): wire react-native preset into install.sh (closes multi-stack umbrella #646)

[artyhoo]

What

Second half of the multi-stack-install-wiring-iphase umbrella (issue #646 Stage 1). react-spa was wired in #713; this wires react-native, making install.sh react-native a fully installable stack and closing the umbrella (both presets now installable). ts-server/react-next/react-spa paths stay byte-identical (verified --dry-run: 0 react-native leak into the prior stacks).

How (RN diverges — wired per the actual preset, not by blind-mirroring react-next)

• Two baseline eslint configs (Expo vs bare-RN) — picked by detecting the consumer's deps: "expo" in package.json → eslint.config.expo.mjs; else eslint.config.bare-rn.mjs → eslint.config.mjs. The shared eslint.config.rn-common.mjs (which both baselines import) is always copied so the import resolves at ESLint load.
• No custom eslint-rules (RN ships none) → no preset eslint-rules copy branch, no barrel refs.
• No playwright (native / web-less; E2E is Detox/Maestro, not wired by install).
• REACT_NATIVE_DEVDEPS = RN eslint toolchain only (eslint-config-expo, @react-native/eslint-config + @eslint/eslintrc via FlatCompat, eslint-plugin-react-native(-a11y)).
• eslint.config.rn-common.mjs registered in ignore_shipped_configs candidates[] — the gh-531 prettier-ignore drift guard caught the new basename escaping the conditional ignore (rules-as-tests working as intended); fixed in the same change.
• Stack selection: arg parser, guard, interactive menu (4) react-native), --refresh auto-detect.

Self-application gates extended:

• principle 09 (SHIPPED_DOCS ↔ REQUIRED_HEADER_DOCS): +3 react-native docs (count 22→25, shape sentinel 69→72, SHIPPED_DOC_PREFIXES += packages/preset-react-native/).
• principle 05: react-native RULES.md is static (non-manifest-rendered) → out of manifest-drift scope (scope comment generalized to both new presets).
• New paired-negative test tests/install-sh/react-native-wiring.test.sh (RED→GREEN) + wired into audit-self.yml (meta-all-wired green).

Verification (evidence, per T3)

principle suite ........ 27 files, 229 tests passed
tsc --noEmit (core) .... clean
install-sh suite ....... PASS=45 FAIL=0  (incl. new react-native-wiring + gh-531 fix)
react-native-wiring .... RED 2/9 (pre-fix, "Unknown stack") → GREEN 9/9 (post-fix)
dry-run all 4 stacks ... ts-server/react-next/react-spa byte-identical (0 RN leak);
                         react-native: bare-RN default, Expo-on-expo-dep, rn-common lands, no playwright

Umbrella closure

Writes .claude/orchestrator-prompts/multi-stack-install-wiring-iphase/done.md (both presets wired: react-spa #713 + react-native here).

§1.7 Forward-check applied

Checked against active disciplines. principle 02 (paired-negative): the new test runs a fabricated relative-import through the same resolver and asserts it is flagged unresolved (tests/install-sh/react-native-wiring.test.sh:78), so the import-resolution green is real, not a vacuous empty-loop. principle 09 (doc-authority): the 3 newly-registered RN docs (packages/core/principles/09-doc-authority-hierarchy.ts:98) each already carry an Authoritative-for header (install's author-side verify loop + the principle-09 test both pass). #531 prettier-ignore guard: the new shipped basename was registered in install.sh ignore_shipped_configs candidates[] after gh-531-shipped-prettier.test.sh flagged it — the drift guard did its job. no-paid-llm-in-ci: the new test + workflow step are deterministic bash, zero API calls. capability-commit gate: no new dependency, no new ≥80-LOC file under packages/ (the test is under tests/) → not a capability commit; escape-hatch Prior-art: trailer on the commit.

§1.7 Backward-check applied

Swept the complete set of artefacts under scope ("react-native is an installable stack"). install.sh touchpoint sweep: every react-spa touchpoint (grep -nE 'STACK.*react-spa') has a mirrored react-native branch, adjusted for RN's divergences — arg/guard/menu/refresh-detect/SHIPPED_DOCS/RULES+ARCH/audit-self/templates/dev-deps; the templates branch (install.sh:1102 region) detects Expo-vs-bare and always lands rn-common; no eslint-rules branch and no playwright (RN has neither). --dry-run confirms RN lands its own files and ts-server/react-next/react-spa emit 0 react-native references (byte-identical). shipped-config completeness: gh-531-shipped-prettier.test.sh:66 greps every copy_safe root-config target and asserts it is in candidates[]; eslint.config.rn-common.mjs is now registered and that arm is green. install-sh test-wiring sweep: the new test is wired at .github/workflows/audit-self.yml:307 and meta-all-wired.test.sh is green (non-vacuous). principle 05 exemption (explicit): RN RULES.md static-copy carve-out documented at packages/core/principles/05-manifest-ssot.test.ts:26.

Test plan

• npm --prefix packages/core run test:principles — 229/229
• cd packages/core && npx tsc --noEmit — clean
• tests/install-sh/*.test.sh — 45/45
• install.sh {ts-server,react-next,react-spa,react-native} --dry-run — all complete; first three byte-identical; RN Expo/bare detect verified