feat(devtools): desloppify Multica issue creator + CI docs (APR-217)

[JacobSampson]

Summary

• Adds devtools create-issues command that reads a desloppify scan JSON file and creates Multica child issues for T1/T2 findings, grouped by detector per package
• Adds src/multica/issue-creator.ts with injectable executor for clean testability in ESM
• Adds CI integration guide to README covering threshold gating and optional Multica issue creation on merge to main
• 12 new tests covering grouping, filtering, dry-run mode, executor invocation, error handling, and edge cases

Changes

File	What
src/multica/issue-creator.ts	Core issue-creator logic with CreateIssuesOptions.executor injection
src/commands/create-issues.ts	devtools create-issues CLI command
src/cli.ts	Wires makeCreateIssuesCommand() into the CLI
src/__tests__/issue-creator.test.ts	12 tests (28 total, all passing)
README.md	devtools create-issues docs + CI integration section

Test plan

• pnpm test — 28 tests pass, 0 failures
• pnpm typecheck — 0 errors
• pnpm lint — 0 errors (console warnings are pre-existing across the package)
• pnpm build — ESM + CJS + DTS build success
• Dry-run mode tested: executor never called, correct issue count returned
• Grouping by detector verified: 2 T1 findings with same detector → 1 issue
• maxTier=1 filters out T2 findings
• --parent and --project flags forwarded in exec command
• Executor errors captured into errors[] without throwing

🤖 Generated with Claude Code