⚡ Bolt: RAG retrieval optimization

[RohanExploit]

This PR introduces several performance optimizations and code cleanups to the RAG retrieval hot-path in backend/rag_service.py:

1. Duplicate Code Removal: Removed redundant consecutive calls to self._tokenize(content) in _prepare_policies, preventing unnecessary string parsing during initialization.
2. Duplicate Check Removal: Removed a duplicate if query_tokens.isdisjoint(policy_tokens): block in the retrieve loop.
3. Set Operation Optimization: Replaced the method call query_tokens.intersection(policy_tokens) with the bitwise & operator (query_tokens & policy_tokens). This is more idiomatic Python and avoids method lookup overhead in CPython, making the set intersection calculation slightly faster in the retrieval loop.

These changes are fully backward compatible and maintain exactly the same test coverage.

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PR created automatically by Jules for task 14650502861063109862 started by @RohanExploit

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Summary by cubic

Speeds up the RAG retrieval path by removing duplicate work and using faster set operations. No behavior changes; just small latency and CPU savings in backend/rag_service.py.

• Performance

  • Removed duplicate self._tokenize(content) in _prepare_policies.
  • Removed duplicate isdisjoint check in retrieve.
  • Switched to query_tokens & policy_tokens for intersection.

• Dependencies

  • Bumped ts-jest to ^29.4.11.
  • Updated transitive semver to 7.8.x.

^{Written for commit 0b80e95. Summary will update on new commits.}

Summary by CodeRabbit

• Refactor

  • Optimized token processing and similarity calculations in the retrieval service for improved efficiency.

• Chores

  • Updated development dependency ts-jest to version 29.4.11.

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[github-actions]

🙏 Thank you for your contribution, @RohanExploit!

PR Details:

• Title: ⚡ Bolt: RAG retrieval optimization
• Number: ⚡ Bolt: RAG retrieval optimization #842

Quality Checklist:
Please ensure your PR meets the following criteria:

• Code follows the project's style guidelines
• Self-review of code completed
• Code is commented where necessary
• Documentation updated (if applicable)
• No new warnings generated
• Tests added/updated (if applicable)
• All tests passing locally
• No breaking changes to existing functionality

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ℹ️ Recent review info

⚙️ Run configuration

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Run ID: 73153715-c6cd-4d57-b61d-d4902105fdcc

📥 Commits

Reviewing files that changed from the base of the PR and between ebecc88 and 0b80e95.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (2)

• backend/rag_service.py
• package.json

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📝 Walkthrough

Walkthrough

This PR introduces two small optimizations to the RAG retrieval service and updates a development dependency. The _prepare_policies method removes redundant token assignment, while retrieve simplifies set intersection calculation from method call to operator syntax. The ts-jest dependency is bumped to a patch version.

Changes

RAG Service and Dependencies

Layer / File(s)	Summary
RAG token preparation and set intersection optimization backend/rag_service.py	Token precomputation in _prepare_policies loop removes explicit content_tokens assignment. Set intersection in retrieve switches from .intersection() method to & operator for Jaccard similarity calculation.
Development dependency version bump package.json	ts-jest development dependency updated from ^29.4.9 to ^29.4.11.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• RohanExploit/VishwaGuru#698: Both PRs modify backend/rag_service.py retrieval internals—specifically _prepare_policies pre-tokenization behavior and the retrieve similarity/intersection computation.
• RohanExploit/VishwaGuru#715: Both PRs modify backend/rag_service.py's RAG retrieval Jaccard similarity logic with set-based intersection computation and token precomputation changes.
• RohanExploit/VishwaGuru#718: Both PRs modify backend/rag_service.py's retrieve Jaccard intersection logic and related token preparation in _prepare_policies.

Suggested labels

size/xs

Poem

🐰 A token saved, a set refined,
Two optimizations well designed,
Dependencies bump in one small file,
Small changes that make code worthwhile!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'RAG retrieval optimization' clearly and specifically describes the main change: optimizing RAG service performance through code cleanup and set operation improvements.
Description check	✅ Passed	The description comprehensively covers the PR objectives with detailed explanations of each change, its impact, and backward compatibility assurances.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[Copilot]

Pull request overview

This PR optimizes the RAG retrieval hot path in backend/rag_service.py by removing redundant work and using slightly faster set operations, and also updates a small set of JS dev dependencies via ts-jest (with an associated semver lockfile update).

Changes:

• Removed a redundant duplicate tokenization call in _prepare_policies to avoid extra preprocessing work.
• Removed a duplicate isdisjoint() early-exit check in retrieve and switched set intersection to query_tokens & policy_tokens.
• Bumped ts-jest (and updated package-lock.json, including semver resolution).

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
backend/rag_service.py	Removes redundant tokenization / duplicate early-exit logic and uses & for set intersection in the retrieval loop.
package.json	Bumps ts-jest dev dependency to ^29.4.11.
package-lock.json	Updates lockfile entries for ts-jest and transitive semver resolution.

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[cubic-dev-ai]

No issues found across 3 files

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