feat(python-sdk): SDK metadata + CDN-indexed stubs for Go and Python classes

[shivasurya]

Summary

Adds the handcrafted SDK metadata and CDN indexers that drive the new /sdk/ documentation on codepathfinder.dev.

• codepathfinder/go_rule_meta.py — 72 Go classes, 221 methods (Gin, Echo, Fiber, Chi, Gorilla Mux, GORM, sqlx, pgx, Mongo, Redis, JWT, Viper, YAML, gRPC, Resty + stdlib).
• codepathfinder/python_rule_meta.py — 100 Python class entries, 302 methods across 9 categories (web frameworks, command exec, databases, deserialization, HTTP clients, filesystem, archives, crypto, templating).
• scripts/generate_sdk_manifest.py — Reads each *_rule_meta.py and emits sdk-manifest.json consumed by the website. Chains the two indexers below automatically; --skip-cdn-index opts out.
• scripts/index_python_from_cdn.py — Fills stubs for every Python module in the assets.codepathfinder.dev CDN registries that isn't already covered by hand.
• scripts/index_go_from_cdn.py — Same pattern for Go stdlib and third-party CDN entries.

Coverage in the published manifest

Language	Handcrafted	CDN stubs	Total classes	Total methods
Go	72	132	204	1,132
Python	100	329	429	2,781

100% of 167 Go stdlib + 25 Go third-party + 211 Python stdlib + 208 Python third-party modules from the CDN are indexed. Stubs carry role: neutral with a clear banner so readers don't mistake auto-indexed metadata for verified security annotations.

Lint status

Matches the canonical lintPython task in sast-engine/build.gradle:

• black --check codepathfinder/go_rule_meta.py codepathfinder/python_rule_meta.py scripts/ — all files left unchanged
• ruff check codepathfinder/ scripts/ — all checks passed
• mypy on the 5 new/modified files — no issues found

Pre-existing formatting drift in python_ir.py, go_rule.py, and tests/test_go_thirdparty_querytypes.py is out of scope and left untouched.

Test plan

• cd python-sdk && python3 scripts/generate_sdk_manifest.py runs end-to-end and regenerates sdk-manifest.json without raising (ignored output path requires cpf-website checkout adjacent).
• cd python-sdk && black --check codepathfinder/go_rule_meta.py codepathfinder/python_rule_meta.py scripts/ passes.
• cd python-sdk && ruff check codepathfinder/go_rule_meta.py codepathfinder/python_rule_meta.py scripts/ passes.
• cd python-sdk && mypy codepathfinder/go_rule_meta.py codepathfinder/python_rule_meta.py scripts/generate_sdk_manifest.py scripts/index_go_from_cdn.py scripts/index_python_from_cdn.py passes.
• Confirm generated Go manifest totals: 204 classes / 1,132 methods.
• Confirm generated Python manifest totals: 429 classes / 2,781 methods.

🤖 Generated with Claude Code

[safedep]

SafeDep Report Summary

No dependency changes detected. Nothing to scan.

View complete scan results →

_{This report is generated by SafeDep Github App}

[github-actions]

Code Pathfinder Security Scan

No security issues detected.

Metric	Value
Files Scanned	5
Rules	0

---

_{Powered by Code Pathfinder}