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/prompts/content-quality-gate.md

@@ -0,0 +1,21 @@
+LINKEDIN CONTENT QUALITY GATE: If the file being written/edited is LinkedIn content (a post draft, article, or content file — NOT config files, state files, scripts, or documentation), verify these requirements before proceeding:
+
+**Hook Check:**
+- The first line (hook) MUST be 110-140 characters. Count precisely.
+- If over 140: the hook gets cut off on mobile. Shorten it.
+- If under 110: wasting prime real estate. Expand it.
+
+**Link Check:**
+- NO external links (http/https URLs) in the post body. LinkedIn suppresses reach by 40-50% for posts with links.
+- If a link is needed, instruct the user to put it in the FIRST COMMENT after posting.
+
+**Tone Check:**
+- Scan for corporate buzzwords: 'leverage', 'synergy', 'paradigm shift', 'thought leader', 'disruptive', 'value proposition', 'ecosystem', 'holistic approach', 'actionable insights', 'best practices'.
+- If 2+ are found, flag: 'This reads corporate. LinkedIn rewards authentic, conversational tone. Replace buzzwords with plain language.'
+
+**Length Check:**
+- Standard posts: 1,200-1,800 characters optimal.
+- Quick posts: 150-500 characters.
+- If outside range, flag with specific character count.
+
+**Skip this check** if the file is a config file, state file (.local.md), script, hook, JSON, or documentation file. Only apply to LinkedIn content.