feat: Mark Python as verified for method extraction without receiver type handling

Addresses tree-sitter AST structure verification where Python methods are nested within class bodies like Java and Swift, eliminating the need for getReceiverType extraction. Verified against Flask codebase and moved from "Needs Verification" to completed language support.

docs/SEARCH_QUALITY_LOOP.md

@@ -522,6 +522,7 @@ if (receiverType) {
 - [x] **Go** — `getReceiverType` extracts receiver from `func (sl *Type) method()`
 - [x] **Swift** — NOT needed. Tree-sitter nests methods inside class/extension bodies
 - [x] **Java** — NOT needed. Methods nested in class body. Verified against Guava
+- [x] **Python** — NOT needed. Methods nested in class body. Verified against Flask
 
 ### Needs Verification
 
@@ -533,6 +534,5 @@ Check these — may need `getReceiverType` if methods are top-level in the AST:
 
 Verify these DON'T need `getReceiverType` (methods nested in class body):
 
-- [ ] Python
 - [ ] TypeScript
 - [ ] C#