fix: CI fixes, security audit, remotion skill, lead-intelligence, npm audit (#1039)

* fix(ci): resolve cross-platform test failures

- Sanity check script (check-codex-global-state.sh) now falls back to
  grep -E when ripgrep is not available, fixing the codex-hooks sync
  test on all CI platforms. Patterns converted to POSIX ERE for
  portability.
- Unicode safety test accepts both / and \ path separators so the
  executable-file assertion passes on Windows.
- Gacha test sets PYTHONUTF8=1 so Python uses UTF-8 stdout encoding on
  Windows instead of cp1252, preventing UnicodeEncodeError on box-drawing
  characters.
- Quoted-hook-path test skipped on Windows where NTFS disallows
  double-quote characters in filenames.

* feat: port remotion-video-creation skill (29 rules), restore missing files

New skill:
- remotion-video-creation: 29 domain-specific Remotion rules covering 3D/Three.js,
  animations, audio, captions, charts, compositions, fonts, GIFs, Lottie,
  measuring, sequencing, tailwind, text animations, timing, transitions,
  trimming, and video embedding. Ported from personal skills.

Restored:
- autonomous-agent-harness/SKILL.md (was in commit but missing from worktree)
- lead-intelligence/ (full directory restored from branch commit)

Updated:
- manifests/install-modules.json: added remotion-video-creation to media-generation
- README.md + AGENTS.md: synced counts to 139 skills

Catalog validates: 30 agents, 60 commands, 139 skills.

* fix(security): pin MCP server versions, add dependabot, pin github-script SHA

Critical:
- Pin all npx -y MCP server packages to specific versions in .mcp.json
  to prevent supply chain attacks via version hijacking:
  - @modelcontextprotocol/server-github@2025.4.8
  - @modelcontextprotocol/server-memory@2026.1.26
  - @modelcontextprotocol/server-sequential-thinking@2025.12.18
  - @playwright/mcp@0.0.69 (was 0.0.68)

Medium:
- Add .github/dependabot.yml for weekly npm + github-actions updates
  with grouped minor/patch PRs
- Pin actions/github-script to SHA (was @v7 tag, now pinned to commit)

* feat: add social-graph-ranker skill — weighted network proximity scoring

New skill: social-graph-ranker
- Weighted social graph traversal with exponential decay across hops
- Bridge Score: B(m) = Σ w(t) · λ^(d(m,t)-1) ranks mutuals by target proximity
- Extended Score incorporates 2nd-order network (mutual-of-mutual connections)
- Final ranking includes engagement bonus for responsive connections
- Runs in parallel with lead-intelligence skill for combined warm+cold outreach
- Supports X API + LinkedIn CSV for graph harvesting
- Outputs tiered action list: warm intros, direct outreach, network gap analysis

Added to business-content install module. Catalog validates: 30/60/140.

* fix(security): npm audit fix — resolve all dependency vulnerabilities

Applied npm audit fix --force to resolve:
- minimatch ReDoS (3 vulnerabilities, HIGH)
- smol-toml DoS (MODERATE)
- brace-expansion memory exhaustion (MODERATE)
- markdownlint-cli upgraded from 0.47.0 to 0.48.0

npm audit now reports 0 vulnerabilities.

* fix: resolve markdown lint and yarn lockfile sync

- MD047: ensure single trailing newline on all remotion rule files
- MD012: remove consecutive blank lines in lottie, measuring-dom-nodes, trimming
- MD034: wrap bare URLs in angle brackets (tailwind, transcribe-captions)
- yarn.lock: regenerated to sync with npm audit changes in package.json

* fix: replace unicode arrows in lead-intelligence (CI unicode safety check)

skills/remotion-video-creation/rules/import-srt-captions.md

@@ -0,0 +1,67 @@
+---
+name: import-srt-captions
+description: Importing .srt subtitle files into Remotion using @remotion/captions
+metadata:
+  tags: captions, subtitles, srt, import, parse
+---
+
+# Importing .srt subtitles into Remotion
+
+If you have an existing `.srt` subtitle file, you can import it into Remotion using `parseSrt()` from `@remotion/captions`.
+
+## Prerequisites
+
+First, the @remotion/captions package needs to be installed.
+If it is not installed, use the following command:
+
+```bash
+npx remotion add @remotion/captions # If project uses npm
+bunx remotion add @remotion/captions # If project uses bun
+yarn remotion add @remotion/captions # If project uses yarn
+pnpm exec remotion add @remotion/captions # If project uses pnpm
+```
+
+## Reading an .srt file
+
+Use `staticFile()` to reference an `.srt` file in your `public` folder, then fetch and parse it:
+
+```tsx
+import {useState, useEffect, useCallback} from 'react';
+import {AbsoluteFill, staticFile, useDelayRender} from 'remotion';
+import {parseSrt} from '@remotion/captions';
+import type {Caption} from '@remotion/captions';
+
+export const MyComponent: React.FC = () => {
+  const [captions, setCaptions] = useState<Caption[] | null>(null);
+  const {delayRender, continueRender, cancelRender} = useDelayRender();
+  const [handle] = useState(() => delayRender());
+
+  const fetchCaptions = useCallback(async () => {
+    try {
+      const response = await fetch(staticFile('subtitles.srt'));
+      const text = await response.text();
+      const {captions: parsed} = parseSrt({input: text});
+      setCaptions(parsed);
+      continueRender(handle);
+    } catch (e) {
+      cancelRender(e);
+    }
+  }, [continueRender, cancelRender, handle]);
+
+  useEffect(() => {
+    fetchCaptions();
+  }, [fetchCaptions]);
+
+  if (!captions) {
+    return null;
+  }
+
+  return <AbsoluteFill>{/* Use captions here */}</AbsoluteFill>;
+};
+```
+
+Remote URLs are also supported - you can `fetch()` a remote file via URL instead of using `staticFile()`.
+
+## Using imported captions
+
+Once parsed, the captions are in the `Caption` format and can be used with all `@remotion/captions` utilities.