feat: initial cog release — cognitive architecture for Claude Code

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/commands/history.md

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+Use this skill for deep memory search and recall. Trigger if the user says "what did I say about...", "when did we discuss...", "find that conversation about...", "history of...", or asks about past information that needs multi-file search.
+
+## Domain
+
+Memory recall — recursive search across all memory files, cross-referencing observations, entities, and action items.
+
+## Memory Files
+
+Read on activation:
+- `memory/hot-memory.md` (for context on what's currently relevant)
+
+Search across:
+- All `observations.md` files (personal, work domains, cog-meta)
+- All `entities.md` files
+- All `action-items.md` files
+- All `hot-memory.md` files
+- `memory/glacier/` (via index.md for targeted retrieval)
+
+## Process
+
+### Pass 1: Locate
+
+- Extract keywords from the user's query (names, topics, dates, phrases)
+- `Grep path="memory/" pattern="<keyword>"` for each keyword
+- Note which files matched and how many hits
+- If >10 files match, narrow by domain or add query terms
+- If 0 matches, try synonyms or related terms
+- Check `memory/glacier/index.md` for archived data matching the query
+
+### Pass 2: Extract
+
+- Read the top 3-5 most relevant files (by hit density and recency)
+- Extract the specific passages that match the query
+- Track the timeline: when did the topic first come up? How did it evolve?
+
+### Pass 3: Synthesize
+
+- Combine extracted passages into a coherent answer
+- Present findings chronologically with dates
+- If something seems incomplete, flag it:
+  > "Found references to X in observations but no entity entry — want me to create one?"
+
+## Artifact Formats
+
+**Search result**: `YYYY-MM-DD: <summary of what was found>`
+**Memory gap**: `Gap: referenced but not in memory — <topic>`
+**Timeline**: Chronological list of when a topic appeared and how it evolved
+
+## Activation
+
+Extract search terms from the user's query and begin Pass 1. Be thorough but concise in the synthesis — don't dump raw content.