chore: remove the pre-push git hook (#4)

Drop .githooks/pre-push (and its installer scripts/install-hooks.sh).
The hook ran the full scripts/check.sh on every push, which also
triggered `xcodegen generate` and clobbered the committed
Package.resolved. CI (the required `check` status) already gates main,
so the local hook is redundant. Also strips the now-dead install-hooks
references from AGENTS.md, CONTRIBUTING.md, and the check.sh shellcheck
comment.

Co-authored-by: Alex Kroman <alex@assemblyai.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 3 people

.githooks/pre-push

@@ -20,7 +20,6 @@ swift test --filter DictationSessionTests   # single suite
 swift test --filter happyPath               # single test case by name
 
 scripts/check.sh                            # full health check (see below) — same script CI runs
-scripts/install-hooks.sh                    # one-time: point core.hooksPath at .githooks/ (pre-commit runs check.sh)
 scripts/dev-build.sh                        # signed Debug build + install to /Applications (local dev)
 ```
 

AGENTS.md

@@ -19,7 +19,6 @@ you don't reintroduce something that was deliberately removed.
 
 ```bash
 scripts/bootstrap.sh        # install the local toolchain on a fresh Mac
-scripts/install-hooks.sh    # one-time: point core.hooksPath at .githooks/ (pre-commit runs check.sh)
 scripts/dev-build.sh        # signed Debug build + install to /Applications
 swift test                  # engine unit tests (Swift Testing)
 scripts/check.sh            # full health check — the same script CI runs

CONTRIBUTING.md

@@ -223,8 +223,8 @@ fi
 if command -v shellcheck >/dev/null 2>&1; then
   echo "==> shellcheck"
   cd "$REPO_ROOT"
-  # Static analysis for the project's shell scripts (release-*, install-hooks,
-  # check.sh itself) — catches quoting bugs, unset vars, and unsafe patterns.
+  # Static analysis for the project's shell scripts (release-*, check.sh
+  # itself) — catches quoting bugs, unset vars, and unsafe patterns.
   shellcheck scripts/*.sh
 else
   echo "note: shellcheck not installed; skipping (brew install shellcheck)"