Wrap remaining projects endpoints (3 missing of 24)

[ldraney]

Parent Issue

#86 — Expand Octokit coverage

Category: projects

File: src/tools/categories/projects.ts
Current: 21/24

Already Wrapped

listForRepo, listForOrg, listForUser, get, createForRepo, createForOrg, createForAuthenticatedUser, update, delete, listColumns, getColumn, createColumn, updateColumn, deleteColumn, listCards, getCard, createCard, updateCard, deleteCard, moveCard, moveColumn

Methods to Add (3)

Method	Route
addCollaborator	PUT /projects/{project_id}/collaborators/{username}
listCollaborators	GET /projects/{project_id}/collaborators
removeCollaborator	DELETE /projects/{project_id}/collaborators/{username}
getPermissionForUser	GET /projects/{project_id}/collaborators/{username}/permission

Pattern

See src/tools/categories/git.ts. Tool name: github_projects_<snake_case_method>.

Acceptance Criteria

• All missing methods wrapped
• npm run build passes
• TOOLS.md updated