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/fixable-project/.claude/rules/readme.txt

@@ -0,0 +1,2 @@
+This rule file has the wrong extension.
+It should be .md to be loaded by Claude Code.

tests/fixtures/fixable-project/.claude/rules/typescript.md

@@ -0,0 +1,8 @@
+---
+globs: "**/*.ts"
+---
+
+# TypeScript Rules
+
+- Use strict mode
+- Prefer interfaces over types

tests/fixtures/fixable-project/.claude/settings.json

@@ -0,0 +1,14 @@
+{
+  "apiProvider": "anthropic",
+  "permissions": {
+    "allow": []
+  },
+  "alwaysThinkingEnabled": "true",
+  "effortLevel": "turbo",
+  "hooks": [
+    {
+      "event": "PreToolUse",
+      "command": "echo ok"
+    }
+  ]
+}

tests/fixtures/fixable-project/.config-audit-ignore

@@ -0,0 +1,2 @@
+# Suppress known feature gap findings for this test fixture
+CA-GAP-*

tests/fixtures/fixable-project/CLAUDE.md

@@ -0,0 +1,7 @@
+# Fixable Project
+
+This is a minimal CLAUDE.md for the fixable-project fixture.
+
+## Rules
+
+- Follow TypeScript conventions

tests/fixtures/fixable-project/hooks/hooks.json

@@ -0,0 +1,18 @@
+{
+  "hooks": {
+    "PreToolUse": [
+      {
+        "matcher": {
+          "tool": "Bash"
+        },
+        "hooks": [
+          {
+            "type": "command",
+            "command": "echo ok",
+            "timeout": "5000"
+          }
+        ]
+      }
+    ]
+  }
+}