[SayandB]

Closes #20
Task: T-010

Summary

• add validated working, episodic, semantic, and archival memory tiers
• add tier-aware write/read/list operations over the existing filesystem store
• add cross-tier search results containing source tier and key
• preserve legacy scope-based memory methods

Tracking

Milestone: M2 — Runtime control plane. Owner: SayandB.

Validation and risk

• pytest -q (19 passed)
• touched-slice Ruff check and format check passed
• tier namespaces reuse existing storage; retention/migration policy is out of scope.

AI review and CI checks are required. No independent reviewer is available among repository collaborators; maintainer review is still required.

[SayandB]

Tracking update: linked to T-010 / issue #20, milestone M2, owner SayandB, and labeled enhancement plus roadmap-task. Validation: 19 tests pass; targeted Ruff and format checks pass. AI-review workflow is present on this PR branch. Independent reviewer assignment is pending another repository collaborator.

[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis ✅ 20 - Fully compliant Compliant requirements: Memory tiers are represented by a validated public type (MemoryTier). Tier-aware write, read, list, and search operations use the existing storage implementation. Cross-tier search returns source tier and key without changing existing scope-based behavior. Tests cover each operation, invalid queries, and legacy scope compatibility.

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ No major issues detected