feat: Add session summaries for tool migrations and TypeScript error fixes

- Created `CONTINUITY_ses_458c.md` to document progress on fixing TypeScript errors in `image-tool.ts` and implementing new tools using available packages.
  - Fixed TypeScript error related to `input.psm` casting.
  - Identified remaining TypeScript errors and outlined next steps for resolution.
  - Documented key decisions regarding tool stack and schema fixes.

- Created `CONTINUITY_ses_45a2.md` to summarize the migration of non-compliant tools to the `tracingContext` pattern.
  - Migrated `finnhub-tools.ts`, `git-local.tool.ts`, `jwt-auth.tool.ts`, and `polygon-tools.ts` to remove direct OpenTelemetry API usage.
  - Replaced all relevant OpenTelemetry API calls with the new tracing context methods.
  - Ensured all tools emit `data-tool-progress` events and check for cancellation support.
  - Documented key decisions and next steps for verifying the migrations and addressing unrelated file errors.