feat(theme): apply new color palette and polish UI

- Add theme variables and restyle popup/options using Primary 3 as background and Primary 2 as surfaces; accents use Primary 1.\n- Move Save to a footer section on the options page; add responsive layout and button variants.\n- Update icon build defaults to use Primary 2 for add-on and Primary 1 for toolbar icons.\n- Add build-and-commit helper to run build, stage generated assets, commit, and optionally push.\n- Add npm scripts: build:commit and build:commit:push.

scripts/build-and-commit.js

@@ -0,0 +1,101 @@
+#!/usr/bin/env node
+/*
+ Build + commit (+ optional push) helper.
+
+ - Runs the existing build (`npm run build`)
+ - Stages generated assets (icons by default; optionally dist with INCLUDE_DIST=true)
+ - Commits with a conventional message including the package version
+ - If `--push` or `PUSH=true`, pushes to the current branch's upstream
+
+ Notes:
+ - Respects .gitignore (dist is ignored unless INCLUDE_DIST=true)
+ - Safe no-op when there is nothing to commit
+*/
+
+const fs = require('fs');
+const path = require('path');
+const { spawnSync } = require('child_process');
+
+const REPO = path.join(__dirname, '..');
+const PKG_PATH = path.join(REPO, 'package.json');
+
+function run(cmd, args, opts = {}) {
+  const res = spawnSync(cmd, args, { stdio: 'inherit', ...opts });
+  if (res.error) throw res.error;
+  return res.status || 0;
+}
+
+function runOut(cmd, args, opts = {}) {
+  const res = spawnSync(cmd, args, { encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'], ...opts });
+  if (res.error) throw res.error;
+  return { code: res.status || 0, out: (res.stdout || '').trim(), err: (res.stderr || '').trim() };
+}
+
+function ensureGit() {
+  const { code } = runOut('git', ['--version']);
+  if (code !== 0) {
+    console.error('git not found in PATH');
+    process.exit(1);
+  }
+}
+
+function pkgVersion() {
+  const pkg = JSON.parse(fs.readFileSync(PKG_PATH, 'utf8'));
+  return pkg.version || '0.0.0';
+}
+
+function main() {
+  ensureGit();
+
+  // 1) Build (icons + xpi)
+  console.log('• Running build…');
+  const codeBuild = run('npm', ['run', 'build'], { cwd: REPO });
+  if (codeBuild !== 0) process.exit(codeBuild);
+
+  // 2) Stage generated assets
+  const includeDist = String(process.env.INCLUDE_DIST || '').toLowerCase() === 'true';
+  console.log('• Staging generated assets…');
+  // Always stage icons (tracked or untracked)
+  run('git', ['add', 'icons/icon-*.png'], { cwd: REPO });
+  if (includeDist) {
+    // dist is ignored; force add if requested
+    run('git', ['add', '-f', 'dist'], { cwd: REPO });
+  }
+
+  // 3) Check if anything is staged
+  const { out: staged } = runOut('git', ['diff', '--cached', '--name-only'], { cwd: REPO });
+  if (!staged) {
+    console.log('✓ Nothing to commit. Up to date.');
+    return;
+  }
+
+  // 4) Commit
+  const version = pkgVersion();
+  const msg = `chore(build): update generated assets (v${version})`;
+  console.log(`• Committing: ${msg}`);
+  const codeCommit = run('git', ['commit', '-m', msg], { cwd: REPO });
+  if (codeCommit !== 0) process.exit(codeCommit);
+
+  // 5) Optional push
+  const shouldPush = process.argv.includes('--push') || String(process.env.PUSH || '').toLowerCase() === 'true';
+  if (!shouldPush) {
+    console.log('✓ Commit created. Skipping push (enable with --push or PUSH=true).');
+    return;
+  }
+
+  console.log('• Pushing to upstream…');
+  // If upstream exists, push; else set upstream to origin/<branch>
+  const { code: upCode } = runOut('git', ['rev-parse', '--abbrev-ref', '--symbolic-full-name', '@{u}'], { cwd: REPO });
+  if (upCode === 0) {
+    const codePush = run('git', ['push'], { cwd: REPO });
+    if (codePush !== 0) process.exit(codePush);
+  } else {
+    const { out: branch } = runOut('git', ['rev-parse', '--abbrev-ref', 'HEAD'], { cwd: REPO });
+    const codePush = run('git', ['push', '-u', 'origin', branch], { cwd: REPO });
+    if (codePush !== 0) process.exit(codePush);
+  }
+  console.log('✓ Pushed.');
+}
+
+main();
+