feat(ultraplan-local): v1.6.0 — /ultraresearch-local deep research command

Add /ultraresearch-local for structured research combining local codebase
analysis with external knowledge via parallel agent swarms. Produces research
briefs with triangulation, confidence ratings, and source quality assessment.

New command: /ultraresearch-local with modes --quick, --local, --external, --fg.
New agents: research-orchestrator (opus), docs-researcher, community-researcher,
security-researcher, contrarian-researcher, gemini-bridge (all sonnet).
New template: research-brief-template.md.

Integration: --research flag in /ultraplan-local accepts pre-built research
briefs (up to 3), enriches the interview and exploration phases. Planning
orchestrator cross-references brief findings during synthesis.

Design principle: Context Engineering — right information to right agent at
right time. Research briefs are structured artifacts in the pipeline:
ultraresearch → brief → ultraplan --research → plan → ultraexecute.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

hooks/scripts/pre-compact.mjs

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+// pre-compact.mjs
+// PreCompact hook for linkedin-thought-leadership plugin
+// Reminds Claude to preserve critical LinkedIn session context before compaction
+//
+// Exit codes:
+//   0 - Always allow (informational hook)
+
+const context = [
+  'Before compacting context, preserve these critical LinkedIn session details:',
+  '- Current post draft (full text if in progress)',
+  '- Chosen angle and format',
+  '- User feedback and iteration direction',
+  '- Quality check results',
+  '- State file values (streak, weekly count, last post date)',
+  '- Any planned topics or next steps',
+  'Ensure these survive the context compaction.',
+].join('\n');
+
+const output = {
+  continue: true,
+  hookSpecificOutput: {
+    hookEventName: 'PreCompact',
+    additionalContext: context,
+  },
+};
+
+process.stdout.write(JSON.stringify(output));
+process.exit(0);