Document the XMLRPC API with working examples The XMLRPC section only listed method names with no request format, auth flow, or examples - unlike REST v3, which has both. Filled in: - How to get a personal devKey from the UI (My Settings > API interface). - The raw XML request/response shape, since this is not REST/JSON. - Working tl.createTestSuite and tl.createTestCase examples with curl, verified against a running instance rather than written from the method signatures alone. - A note on issue #450 (duplicate external_id struct member in the createTestCase response), found while verifying the examples. Also corrected the XMLRPC snippet in Developer-Guide.md, which called tl.createTestCase with three positional string arguments; the method takes a single struct and several of the fields it omitted (testprojectid, authorlogin, summary, steps) are required and the call would fail without them.
Add developer documentation pages to Wiki - Developer-Guide.md: Complete developer guide covering architecture, setup, code organization, components, common tasks, best practices, and debugging - Test-Execution.md: Test execution workflow documentation including state machine, result recording, API usage, and database schema - Test-Plan-Linking.md: Test case linking documentation covering complex filtering logic, database schema, and versioning issues These pages fulfill issue #131 requirement to document development topics in Wiki.