chore: full technical rename planarchy → capakraken

Complete rename of all technical identifiers across the codebase:

Package names (11 packages):
- @planarchy/* → @capakraken/* in all package.json, tsconfig, imports

Import statements: 277 files, 548 occurrences replaced

Database & Docker:
- PostgreSQL user/db: planarchy → capakraken
- Docker volumes: planarchy_pgdata → capakraken_pgdata
- Connection strings updated in docker-compose, .env, CI

CI/CD:
- GitHub Actions workflow: all filter commands updated
- Test database credentials updated

Infrastructure:
- Redis channel: planarchy:sse → capakraken:sse
- Logger service name: planarchy-api → capakraken-api
- Anonymization seed updated
- Start/stop/restart scripts updated

Test data:
- Seed emails: @planarchy.dev → @capakraken.dev
- E2E test credentials: all 11 spec files updated
- Email defaults: @planarchy.app → @capakraken.app
- localStorage keys: planarchy_* → capakraken_*

Documentation: 30+ .md files updated

Verification:
- pnpm install: workspace resolution works
- TypeScript: only pre-existing TS2589 (no new errors)
- Engine: 310/310 tests pass
- Staffing: 37/37 tests pass

Co-Authored-By: claude-flow <ruv@ruv.net>

research/v2-architecture-proposal-2026-03-11.md

@@ -57,7 +57,7 @@ This gives you a v2 that is safer, easier to change, and still realistic for a s
 - Impact: provider abstraction is not actually reliable.
 
 ### Repo health checks are currently failing
-- `pnpm test:unit` fails because `@planarchy/shared` has a Vitest script but no tests in [`packages/shared/package.json`](/home/hartmut/Documents/Copilot/planarchy/packages/shared/package.json).
+- `pnpm test:unit` fails because `@capakraken/shared` has a Vitest script but no tests in [`packages/shared/package.json`](/home/hartmut/Documents/Copilot/planarchy/packages/shared/package.json).
 - `pnpm typecheck` fails because `crypto.randomUUID()` is used without a visible import/global typing in [`packages/shared/src/schemas/project.schema.ts#L5`](/home/hartmut/Documents/Copilot/planarchy/packages/shared/src/schemas/project.schema.ts#L5).
 
 These are not “v2 someday” items. They should be fixed before deeper refactoring.