chore: initial commit — portable agent memory & skill scaffold

Extracted and cleaned up from a prior WSL/Windows agent-memory setup.
Contains only project-agnostic content:

- Claude_Memory/: feedback rules, user profile, reusable reference docs,
  session scratch space (claude_info/, claude_log/), mirrored skill defs
- caveman/: ultra-compressed communication mode skill + subcommands
- html-slide-deck/: self-contained HTML slide deck builder skill

Project-specific knowledge (previously mixed in) was moved out to each
project's own repository as part of this cleanup.

caveman/cavecrew/README.md

@@ -0,0 +1,41 @@
+# cavecrew
+
+Decision guide. When to delegate to caveman subagents instead of doing the work inline.
+
+## What it does
+
+Tells the main thread when to spawn a caveman-style subagent versus the vanilla equivalent. The win: subagent tool-results inject back into main context verbatim, and caveman output is roughly 1/3 the size of vanilla prose. Across 20 delegations in one session, that is the difference between context exhaustion and finishing the task.
+
+Three subagents:
+
+| Subagent | Job | Use when |
+|----------|-----|----------|
+| `cavecrew-investigator` | Locate code (read-only) | "Where is X defined / what calls Y / list uses of Z" |
+| `cavecrew-builder` | Surgical edit, 1-2 files | Scope is obvious, ≤2 files. Refuses 3+ file scope. |
+| `cavecrew-reviewer` | Diff/file review | One-line findings with severity emoji |
+
+Use vanilla `Explore` or `Code Reviewer` when you want prose, architecture commentary, or rationale. Use main thread directly for one-line answers and 3+ file refactors.
+
+This skill is a decision guide, not a slash command. It activates when the conversation mentions delegation.
+
+## How to invoke
+
+Triggers on phrases like "delegate to subagent", "use cavecrew", "spawn investigator", "save context", "compressed agent output".
+
+## Example chaining
+
+Locate → fix → verify (most common):
+
+1. `cavecrew-investigator` returns site list (`path:line — symbol — note`)
+2. Main thread picks 1-2 sites, hands paths to `cavecrew-builder`
+3. `cavecrew-reviewer` audits the resulting diff
+
+Parallel scout: spawn 2-3 `cavecrew-investigator` calls in one message with different angles (defs, callers, tests). Aggregate in main.
+
+## See also
+
+- [`SKILL.md`](./SKILL.md) — full decision matrix and output contracts
+- [`agents/cavecrew-investigator.md`](../../agents/cavecrew-investigator.md)
+- [`agents/cavecrew-builder.md`](../../agents/cavecrew-builder.md)
+- [`agents/cavecrew-reviewer.md`](../../agents/cavecrew-reviewer.md)
+- [Caveman README](../../README.md) — repo overview