fix(financial-analysis): resolve .mcp.json syntax and remove dead doc link (#273, #299)

[AbhiPra24]

Resolves #273
Resolves #299

Summary of Changes

1. Fix .mcp.json syntax in financial-analysis:
   • Added missing comma after the egnyte connector object.
   • Added missing closing brace } to the box connector object.
2. Prevent future JSON syntax regressions in CI:
   • Added plugins/**/.mcp.json and plugins/**/hooks/*.json to json_globs in scripts/check.py so all manifest and MCP files are validated automatically before merge.
3. Remove dead file reference in documentation:
   • Removed nonexistent mcp-categories.json reference from CLAUDE.md.
4. Version bump:
   • Applied standard patch bump to financial-analysis (0.1.1 -> 0.1.2) via scripts/version_bump.py.

Verification

• Ran python3 scripts/check.py — verified 93/93 files parsed and passed with 0 issues.
• Ran python3 -m json.tool plugins/vertical-plugins/financial-analysis/.mcp.json — verified valid JSON format.
• Ran python3 scripts/version_bump.py --check — verified version bump validation passes cleanly.