feat(mcp): bill of materials read tools

[andypalmi]

Summary

Phase 1 read-only MCP tools for the bill of materials, in a new forge/ee/lib/mcp/tools/bom.js file:

• platform_get_team_bom - GET /teams/:teamId/bom
• platform_get_application_bom - GET /applications/:applicationId/bom

Both tools are readOnlyHint: true, destructiveHint: false. BOM is plan-gated on feature key bom (default disabled); the tools surface a clear "feature not enabled for this team" message instead of a bare error when the team's plan does not have the feature. Team BOM results are filtered to the applications the caller can access.

The audit-log, history, and resource-usage read tools are filed with the resource they describe (team audit log in teams.js, hosted instance audit log/history/resources in instances.js, remote instance audit log/history in devices.js, application audit-log export in applications.js), following the one-file-per-resource convention.

Scopes allow-listed for user:expert-mcp in forge/routes/auth/permissions.js:

• team:bom
• application:bom

Closes #7676

Test plan

• eslint passes on changed files
• Tool definitions load without error (require sanity check)
• CI

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.42%. Comparing base (103f9ae) to head (a5b4257).

Additional details and impacted files

@@                      Coverage Diff                       @@
##           feat/mcp-tools-shared-schemas    #7724   +/-   ##
==============================================================
  Coverage                          75.41%   75.42%           
==============================================================
  Files                                426      427    +1     
  Lines                              22551    22559    +8     
  Branches                            5949     5949           
==============================================================
+ Hits                               17006    17014    +8     
  Misses                              5545     5545           

Flag	Coverage Δ
backend	75.42% <100.00%> (+<0.01%)	⬆️

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