Add pre-push hook: compilation + test gate (#354)

[joelteply]

Summary

Replaces placeholder pre-push hook with real validation:

1. TypeScript compilation — npm run build:ts (~15s)
2. Rust compilation — cargo check (~20s cached)
3. Rust tests — cargo test --lib (~30s cached)

Blocks push on failure. Skip with git push --no-verify when needed.

Note: .git/hooks/pre-push must be installed locally (not tracked by git).
The script at src/scripts/git-prepush.sh IS tracked. Installation:

echo '#!/bin/bash
cd "$(dirname "$0")/../.."
exec src/scripts/git-prepush.sh' > .git/hooks/pre-push && chmod +x .git/hooks/pre-push

Test plan

• Script runs and reports pass/fail correctly
• TypeScript compilation gate works
• Rust check/test gate works

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds a real pre-push validation gate to prevent pushing code that doesn’t compile or pass core tests, complementing existing hook tooling in src/scripts/.

Changes:

• Run TypeScript compilation via npm run build:ts before push.
• Run Rust compilation via cargo check for src/workers/continuum-core.
• Run Rust library tests via cargo test --lib and block push on failures.

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[Copilot]

The TypeScript gate suppresses all output (> /dev/null 2>&1), so when it fails the hook provides no actionable diagnostics and forces a rerun. Consider letting stdout/stderr through, or capturing output and only printing it on failure (while keeping the success path quiet).

Suggested change

	if cd "$SRC_DIR" && npm run build:ts > /dev/null 2>&1; then
	echo "✅ TypeScript: clean ($(( $(date +%s) - TS_START ))s)"
	else
	echo "❌ TypeScript compilation FAILED"
	echo " Run: cd src && npm run build:ts"
	TS_OUTPUT=$(cd "$SRC_DIR" && npm run build:ts 2>&1)
	TS_STATUS=$?
	if [ "$TS_STATUS" -eq 0 ]; then
	echo "✅ TypeScript: clean ($(( $(date +%s) - TS_START ))s)"
	else
	echo "❌ TypeScript compilation FAILED"
	echo " Run: cd src && npm run build:ts"
	echo ""
	echo "$TS_OUTPUT"

[Copilot]

cargo check 2>/dev/null discards compiler warnings and (more importantly) error messages. If the check fails, developers won't see why from the hook output. Prefer showing cargo output, or capturing and printing it only on failure.

[Copilot]

The Rust test gate is fragile: it ignores cargo test's exit status and instead checks whether the last line matches ^test result: ok. Cargo output isn't guaranteed to end with that line (e.g., doc-tests or other trailing output), which can falsely fail and block pushes. Prefer relying on cargo test --lib's exit code (and avoid the tail|grep pipeline), or add set -o pipefail and parse output without assuming the last line.