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/broken-project/.claude/rules/big-unscoped.md

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+Coding Standards and Best Practices
+
+All code must be reviewed before merging to the main branch.
+Every function must have a clear, single responsibility.
+Variable names must be descriptive and follow camelCase convention.
+Constants must be named in UPPER_SNAKE_CASE.
+Avoid magic numbers; use named constants instead.
+Keep line length under 120 characters.
+Use four spaces for indentation, never tabs.
+Files must end with a newline character.
+Remove trailing whitespace from all lines.
+Do not commit commented-out code.
+Delete dead code instead of leaving it in place.
+Write self-documenting code; comments explain why, not what.
+All TODO comments must reference a ticket number.
+Do not use abbreviations that are not widely understood.
+Use positive variable names; prefer isActive over isNotInactive.
+Avoid double negatives in conditional expressions.
+Keep nesting levels to a maximum of three.
+Extract complex conditions into named boolean variables.
+Use early returns to reduce nesting.
+Avoid else after return.
+Keep functions under 40 lines of code.
+Keep files under 300 lines of code.
+Split large files into smaller, focused modules.
+Use named exports, not default exports.
+Group imports: standard library, external, internal.
+Sort import groups alphabetically.
+Do not use wildcard imports.
+Remove unused imports before committing.
+Use absolute imports for cross-module dependencies.
+Use relative imports only within the same module.
+Avoid circular dependencies between modules.
+Use barrel files only at module boundaries.
+Do not re-export from multiple barrel files.
+Prefer named interfaces over inline type definitions.
+Use generic types to avoid duplication.
+Avoid type assertions unless absolutely necessary.
+Do not use ts-ignore comments without explanation.
+Enable strict mode in tsconfig.
+Use unknown instead of any for unsafe types.
+Prefer type narrowing over type assertions.
+Use discriminated unions for complex state.
+Model optional fields explicitly with undefined.
+Avoid null; prefer undefined.
+Use optional chaining for nullable access.
+Use nullish coalescing for defaults.
+Do not mix null and undefined in the same API.
+Use enums for finite sets of values.
+Prefer const enums for performance-sensitive code.
+Do not extend enums dynamically.
+Use readonly arrays and objects where mutation is unintended.
+Prefer immutable data structures in shared state.
+Avoid mutations in pure functions.
+Use spread operators for shallow copies.
+Use structuredClone for deep copies.
+Do not mutate function parameters.
+Return new objects from transformation functions.
+Use Array methods over imperative loops where readable.
+Avoid side effects in map and filter callbacks.

tests/fixtures/broken-project/.claude/rules/dead-rule.md

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+---
+globs: nonexistent-dir/**/*.xyz
+---
+
+# Dead Rule
+This rule matches nothing.

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

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+{
+  "includeCoAuthoredBy": true,
+  "alwaysThinkingEnabled": "yes",
+  "effortLevel": "turbo",
+  "unknownKey123": true,
+  "hooks": ["not", "an", "object"]
+}