Lint CLI code: no-raw-console-format rule, fix all violations
Add no-raw-console-format lint rule for CLI commands — bans template
literals and string concatenation in console.log, forcing use of
agentfmt helpers (bold, dim, kv, entity, fmtTree, fmtList, etc.).
Extend lint target to include packages/cli/src/.
Fix all 22 lint errors in CLI code:
- Replace string concatenation with agentfmt (clusters, typography, variables)
- Mark optional CLI args as required: false (citty type accuracy)
- Remove unnecessary type assertions and optional chains
- Merge duplicate @open-pencil/core imports in headless.ts
- Extract exportViaApp/exportFromFile to reduce export.ts complexity
- Remove unused imports (formatType, printError)
- void runMain() for floating promise
d9154ef29d