fix(build): include gsd-read-injection-scanner in hooks/dist (#2406)

The scanner was added in #2201 but never added to the HOOKS_TO_COPY
allowlist in scripts/build-hooks.js, so it never landed in hooks/dist/.
install.js reads from hooks/dist/, so every install on 1.37.0/1.37.1
emitted "Skipped read injection scanner hook — not found at target"
and the read-time prompt-injection scanner was silently disabled.

- Add gsd-read-injection-scanner.js to HOOKS_TO_COPY
- Add it to EXPECTED_ALL_HOOKS regression test in install-hooks-copy

Fixes #2406

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

CHANGELOG.md

@@ -10,6 +10,7 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - **`/gsd-ingest-docs` command** — Scan a repo containing mixed ADRs, PRDs, SPECs, and DOCs and bootstrap or merge the full `.planning/` setup from them in a single pass. Parallel classification (`gsd-doc-classifier`), synthesis with precedence rules and cycle detection (`gsd-doc-synthesizer`), three-bucket conflicts report (`INGEST-CONFLICTS.md`: auto-resolved, competing-variants, unresolved-blockers), and hard-block on LOCKED-vs-LOCKED ADR contradictions in both new and merge modes. Supports directory-convention discovery and `--manifest <file>` YAML override with per-doc precedence. v1 caps at 50 docs per invocation; `--resolve interactive` is reserved. Extracts shared conflict-detection contract into `references/doc-conflict-engine.md` which `/gsd-import` now also consumes (#2387)
 
 ### Fixed
+- **`gsd-read-injection-scanner` hook now ships to users** — the scanner was added in 1.37.0 (#2201) but was never added to `scripts/build-hooks.js`' `HOOKS_TO_COPY` allowlist, so it never landed in `hooks/dist/` and `install.js` skipped it with "Skipped read injection scanner hook — gsd-read-injection-scanner.js not found at target". Effectively disabled the read-time prompt-injection scanner for every user on 1.37.0/1.37.1. Added to the build allowlist and regression test (#2406)
 - **Installer now installs `@gsd-build/sdk` automatically** so `gsd-sdk` lands on PATH. Resolves `command not found: gsd-sdk` errors that affected every `/gsd-*` command after a fresh install or `/gsd-update` to 1.36+. Adds `--no-sdk` to opt out and `--sdk` to force reinstall. Implements the `--sdk` flag that was previously documented in README but never wired up (#2385)
 
 ## [1.37.1] - 2026-04-17

scripts/build-hooks.js

@@ -20,6 +20,7 @@ const HOOKS_TO_COPY = [
   'gsd-context-monitor.js',
   'gsd-prompt-guard.js',
   'gsd-read-guard.js',
+  'gsd-read-injection-scanner.js',
   'gsd-statusline.js',
   'gsd-workflow-guard.js',
   // Community hooks (bash, opt-in via .planning/config.json hooks.community)

tests/install-hooks-copy.test.cjs

@@ -35,6 +35,7 @@ const EXPECTED_ALL_HOOKS = [
   'gsd-context-monitor.js',
   'gsd-prompt-guard.js',
   'gsd-read-guard.js',
+  'gsd-read-injection-scanner.js',
   'gsd-statusline.js',
   'gsd-workflow-guard.js',
   ...EXPECTED_SH_HOOKS,