feat: add EPISODIC memory strategy support

[tejaskash]

Summary

• Adds EPISODIC as a new memory strategy type across the CLI: schema, primitives, TUI, templates, and docs
• EPISODIC strategy requires reflectionNamespaces (service requirement); enforced via Zod schema refinement
• Default namespaces and reflectionNamespaces are auto-populated for EPISODIC when creating memories via TUI or CLI flags
• longAndShortTerm memory preset now includes all 4 strategies (SEMANTIC, SUMMARIZATION, USER_PREFERENCE, EPISODIC)

Depends on CDK PR: https://github.com/aws/agentcore-l3-cdk-constructs/pull/108

TUI Walkthrough

1. Select "Add" from the main menu

2. Choose "Memory" resource

3. Enter memory name

4. Strategy picker now shows EPISODIC

5. All 4 strategies selected including EPISODIC

6. Review screen confirms EPISODIC

7. Memory created successfully

8. Resulting agentcore.json

EPISODIC strategy is persisted with both namespaces and reflectionNamespaces:

{
  "type": "EPISODIC",
  "namespaces": ["/episodes/{actorId}/{sessionId}"],
  "reflectionNamespaces": ["/reflections/{actorId}"]
}

Test plan

• Unit tests: Zod refinement tests (accepts/rejects EPISODIC with/without reflectionNamespaces)
• Unit tests: create command verifies EPISODIC in longAndShortTerm preset
• Integration tests: add memory --strategies EPISODIC verifies reflectionNamespaces in config
• Integration tests: create-memory longAndShortTerm verifies all 4 strategies
• TUI integration test: full Add Memory wizard flow selecting EPISODIC
• E2E test: strands-bedrock-memory deploys with longAndShortTerm (includes EPISODIC)
• TUI screenshots captured showing the full EPISODIC selection flow

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	45.69%	6445 / 14105
🔵	Statements	45.25%	6840 / 15113
🔵	Functions	44.54%	1159 / 2602
🔵	Branches	45.63%	4208 / 9220

Generated in workflow #1387 for commit cc45775 by the Vitest Coverage Report Action

[jesseturner21]

lol i like the screenshots but we should remove them from docs/

[notgitika]

1. docs/memory.md says reflectionNamespaces "must be a prefix of namespaces" but the code doesn't enforce this and the defaults don't satisfy it — Blocking. Users will follow the doc and get confused, or the service will reject configs that follow the doc's defaults.
2. Schema validation mismatch between CLI and CDK — CLI requires reflectionNamespaces for EPISODIC via Zod refinement; CDK allows EPISODIC without it and even has a test asserting that path works. Non-blocking but worth a comment — if someone bypasses the CLI, CDK will happily synth invalid CloudFormation.
3. Unrelated commits in PR #651 (evaluator tests, OIDC constant removal, readProjectConfig retype) — Non-blocking, but repo convention says keep PRs focused.

LGTM otherwise

[tejaskash]

Thanks for the review! Addressing each point:

1. reflectionNamespaces prefix claim (blocking) — Fixed in 777e402. The doc incorrectly stated reflectionNamespaces "must be a prefix of namespaces." That's not a service requirement — removed that claim. The defaults (/episodes/{actorId}/{sessionId} and /reflections/{actorId}) are correct per the service docs.

2. CLI/CDK schema mismatch — Good catch. The CDK is intentionally more permissive since it's a lower-level construct — users bypassing the CLI take on responsibility for valid configs. But agree it's worth noting. Will add a comment in the CDK code.

3. Unrelated commits — The evaluator test and OIDC constant changes came from rebase conflict resolution against main. The evaluator test was an add/add conflict (accepted theirs), and the OIDC constant was introduced by main then flagged as unused by the code quality bot. Happy to squash these on merge if preferred.

[tejaskash]

Done — removed the episodic-memory screenshots from docs/ in 3ad72ed (kept the existing advanced-gate ones).

[tejaskash]

Correction on point 1 — the prefix requirement IS correct per the AWS docs. Fixed properly in cc45775:

• Changed default reflectionNamespaces from /reflections/{actorId} to /episodes/{actorId} (a proper prefix of /episodes/{actorId}/{sessionId})
• Added a Zod refinement that validates each reflectionNamespace is a prefix of at least one namespace
• Restored the doc claim
• Added tests for the prefix validation (accepts valid prefixes, rejects non-prefixes)

[jesseturner21]

lgtm

[notgitika]

LGTM