feat(knowledge): expose memory_name in results; correct memory embedding PRD

[arantespp]

Summary

The two follow-up items flagged during the knowledge/memory PRD review, done on a dedicated branch (keeping the docs PR #249 clean).

Fix #2 — memory_name in knowledge results

Previously memory results carried only memory_id, so the agent context-injection label was the opaque [Memory: mem_abc]. Now results include the human-readable memory name.

• memoryName added to MemoryKnowledgeResult (both the semantic and non-search paths in knowledgeMemory.ts). The Memory association is already loaded, so there's no extra query.
• memory_name added (required) to the OpenAPI MemoryKnowledgeResult schema → SDK/CLI regenerated (generated files are gitignored, rebuilt in CI).
• Context-injection label is now [Memory: <name>] (agentKnowledge.ts).
• Tests: REST knowledge search asserts memory_name; the label unit test expects the memory name.

Fix #1 — memory embedding resilience (docs only)

The review flagged a MemoryEntry.embedding NOT NULL vs DocumentChunk.embedding nullable mismatch. On inspection, the code already aligns memory to documents — MemoryEntry.embedding is nullable and writeMemoryEntry is non-fatal on embedding failure (stores the entry, skips dedup). Only the PRD text was stale.

• prd-memories.md: NOT NULL → NULL, write-algorithm STEP 1 non-fatal note, design-principle wording.

Docs

• prd-knowledge.md response examples and knowledge.md data model gain memory_name.

Test plan

• pnpm --filter @soat/server typecheck — clean
• pnpm eslint --fix on touched files — clean
• No as any / as unknown added
• Full suite: 76 suites / 1641 tests pass (run serially against a local Postgres + pgvector via the TEST_DB_HOST hook, since this environment has no Docker runtime)
• TDD: affected tests confirmed red → green

🤖 Generated with Claude Code

https://claude.ai/code/session_01ErUBchseZrpYysrq5rZMNF

---

Generated by Claude Code

[github-actions]

Deploy Outputs

Package	Stack	Output Key	Output Value
@soat/website	SoatWebsite-claude-memory-embedding-resilience	BucketWebsiteURL	http://soatwebsite-claude-memory-embedding-r-staticbucket-izwzvtli0b9b.s3-website-us-east-1.amazonaws.com