feat: add CerebroCortex memory provider plugin

Brain-analogous AI memory with associative networks, ACT-R/FSRS decay,
spreading activation, and LLM-powered dream consolidation.

Features:
- 5 tools: cc_remember, cc_recall, cc_todo, cc_message, cc_health
- Automatic prefetch (relevant memories injected before each turn)
- Background sync (significant user messages auto-stored)
- Session end summaries
- Built-in memory mirroring (MEMORY.md writes → CerebroCortex)
- Delegation capture (subagent results stored as memories)
- Multi-agent messaging (send_message/check_inbox)
- Zero cloud dependencies — SQLite + ChromaDB + igraph, all local

Install: pip install cerebro-cortex
Repo: https://github.com/buckster123/CerebroCortex
Closes #7896

plugins/memory/cerebrocortex/README.md

@@ -0,0 +1,106 @@
+# CerebroCortex Memory Provider
+
+Brain-analogous AI memory for Hermes Agent with associative networks,
+biologically-inspired decay, and dream consolidation.
+
+## What it does
+
+CerebroCortex replaces simple key-value memory with a system modeled on
+how biological memory actually works:
+
+- **6 memory types** — episodic, semantic, procedural, affective,
+  prospective (TODOs), schematic (patterns)
+- **Associative graph** — memories link together via 9 typed/weighted
+  link types. Search spreads activation through the graph, surfacing
+  related memories you didn't explicitly search for
+- **Natural decay** — ACT-R power-law activation + FSRS spaced-repetition.
+  Frequently-used memories stay sharp, noise fades automatically
+- **Dream engine** — Offline LLM-powered consolidation: pattern extraction,
+  schema formation, pruning, cross-domain discovery
+- **Multi-agent messaging** — send_message/check_inbox for agent-to-agent
+  communication through shared memory
+
+All data is local (SQLite + ChromaDB + igraph). No cloud services required.
+Runs on hardware as minimal as a Raspberry Pi 5 (4GB).
+
+## Install
+
+```bash
+pip install cerebro-cortex
+```
+
+## Setup
+
+```bash
+hermes memory setup
+# Select "cerebrocortex" from the list
+```
+
+Or manually in `~/.hermes/config.yaml`:
+
+```yaml
+memory:
+  provider: cerebrocortex
+```
+
+## Tools
+
+| Tool | Description |
+|------|-------------|
+| `cc_remember` | Store a memory (auto-classifies, deduplicates, links) |
+| `cc_recall` | Semantic search with graph activation and decay scoring |
+| `cc_todo` | Store/list/resolve TODOs and reminders |
+| `cc_message` | Cross-agent messaging (send/inbox) |
+| `cc_health` | System health and statistics |
+
+## Automatic features
+
+- **Prefetch** — Before each turn, relevant memories are recalled and
+  injected as context
+- **Sync** — Significant user messages are auto-stored in background
+- **Session end** — Session summary saved automatically
+- **Memory mirror** — Built-in MEMORY.md/USER.md writes are mirrored
+  to CerebroCortex for searchability
+- **Delegation capture** — Subagent task/result pairs stored as memories
+
+## Configuration
+
+| Key | Description | Default |
+|-----|-------------|---------|
+| `agent_id` | Agent identifier for multi-agent setups | `HERMES` |
+| `data_dir` | Data directory path | `~/.cerebro-cortex/` |
+
+Set via `hermes memory setup` or in config.yaml:
+
+```yaml
+plugins:
+  cerebrocortex:
+    agent_id: HERMES
+    data_dir: ~/.cerebro-cortex/
+```
+
+## Multi-agent
+
+Multiple Hermes instances can share a CerebroCortex store:
+
+```yaml
+# Instance 1
+plugins:
+  cerebrocortex:
+    agent_id: HERMES-PRIMARY
+
+# Instance 2
+plugins:
+  cerebrocortex:
+    agent_id: HERMES-RESEARCH
+```
+
+Agents communicate via `cc_message`:
+- `cc_message(action="send", to="HERMES-RESEARCH", content="...")`
+- `cc_message(action="inbox")`
+
+## Links
+
+- [CerebroCortex repo](https://github.com/buckster123/CerebroCortex)
+- [PyPI](https://pypi.org/project/cerebro-cortex/)
+- [Integration report](https://github.com/buckster123/CerebroCortex/blob/main/HERMES_INTEGRATION_REPORT.md)