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>

tests/fixtures/supply-chain/Pipfile.lock

@@ -0,0 +1,14 @@
+{
+  "_meta": {
+    "hash": { "sha256": "abc123" },
+    "pipfile-spec": 6,
+    "requires": { "python_version": "3.11" },
+    "sources": [{ "name": "pypi", "url": "https://pypi.org/simple", "verify_ssl": true }]
+  },
+  "default": {
+    "flask": { "version": "==2.3.0" },
+    "colourama": { "version": "==0.4.6" },
+    "requests": { "version": "==2.31.0" }
+  },
+  "develop": {}
+}