Added

• project_query::function_at(path, line, col) — new host import returning the FunctionInfo whose body contains the given position. Useful for tree-query–driven detectors that need to disambiguate which declared function a queried position belongs to.
• WasmPluginTest::option_list / option_bool / option_int / option_float — list and typed option setters in the test harness, replacing the previous string-only option().

Changed (breaking for WASM plugins)

• tree_query::QueryMatch.start_line / end_line are now 1-based (was 0-based). Aligns with FunctionInfo / ClassInfo / CommentInfo line numbering — no more per-plugin off-by-one conversion. Inputs to node_at(line, col) and nodes_in_range(start, end) are likewise 1-based now.
• Existing plugins compiled against the pre-1.17 WIT will need to be rebuilt against the new SDK; instantiation will fail loudly otherwise.

Fixed

• react-hooks example plugin — false positives on hook_after_early_return (in sibling components and inside return expressions like return useState()) eliminated by switching to project_query::function_at for host-function disambiguation. Now reports 5 true positives / 0 false positives on the 6-component .tsx fixture (was 5 / 2).

Documentation

• docs/plugin-development.md: added Line/Column convention note, Project Query API section, WASM Compatibility Cheatsheet (regex panics, no clock, no FS), cha plugin build vs cargo build distinction, and new option helpers in Testing.