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>

templates/archive/README.md

@@ -0,0 +1,21 @@
+# Archived Templates
+
+These templates were replaced by `templates/unified-report.md` in v1.4.0.
+
+The unified template uses conditional sections activated by `ANALYSIS_TYPE` to serve
+all 9 report formats from a single file. See the section activation table at the top
+of `unified-report.md` for the mapping.
+
+## Archived Files
+
+| File | Replaced by ANALYSIS_TYPE |
+|------|--------------------------|
+| `scan-report.md` | `scan` |
+| `deep-scan-report.md` | `deep-scan` |
+| `audit-report.md` | `audit` |
+| `posture-scorecard.md` | `posture` |
+| `plugin-audit-report.md` | `plugin-audit` |
+| `mcp-audit-report.md` | `mcp-audit` |
+| `threat-model-report.md` | `threat-model` |
+| `pre-deploy-report.md` | `pre-deploy` |
+| `clean-report.md` | `clean` |