Rename Python package mini_claude -> claude_engram

Docs: Ollama is optional, mid-project adoption, GPU/CPU split

Rename to Claude Engram

v0.2.0: Tiered memory, hook overhaul, semantic scoring, multi-project support

Fix 20 bugs from code review and flatten directory structure

Expose missing operations: convention(remove), loop(reset), context(handoff)

Fix path normalization gaps, batch_delete protection, and stale docs

Add batch_delete operation for memory management

Remove duplicate inner README, keep only repo-root one

Update README: remove think tools, fix emoji references

Normalize project paths to prevent duplicate memory entries

Fix hook false positives across test, search, and mistake detection

Fix auto-detect mistake false positives

Bump version to 0.2.0

Clean up output formatting: remove emojis, fix grammar, add ellipsis