Output tool via Arc<Mutex<Subconscious>> closure — complete

ToolHandler is now Arc<dyn Fn(...)> supporting closures that capture
state. The output tool is created during init_output_tool() as a
closure capturing Arc<Mutex<Subconscious>>, writing directly to
Subconscious.state. No more POC_AGENT_OUTPUT_DIR filesystem hack.

- All tool handlers wrapped in Arc::new()
- Tool is Clone (not Copy) — .copied() → .cloned()
- Subconscious wrapped in Arc<Mutex<>> on Mind
- Dead filesystem-based output() function removed
- memory_tools returns 11 items (output removed from static list)

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

src/agent/tools/bash.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/bash.rs — Execute shell commands
 //
 // Runs commands through bash -c with a configurable timeout.

src/agent/tools/channels.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/channels.rs — Channel tools (list, recv, send, notifications)
 //
 // Shared by consciousness agent and the MCP server.

src/agent/tools/control.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/control.rs — Agent control tools
 //
 // These set agent state directly via the Arc<Mutex<Agent>> handle,

src/agent/tools/edit.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/edit.rs — Search-and-replace file editing
 
 use anyhow::{Context, Result};

src/agent/tools/glob.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/glob_tool.rs — Find files by pattern
 //
 // Fast file discovery using glob patterns. Returns matching paths

src/agent/tools/grep.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/grep.rs — Search file contents
 //
 // Prefers ripgrep (rg) for speed, falls back to grep -r if rg

src/agent/tools/memory.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/memory.rs — Native memory graph operations
 //
 // Direct library calls into the store — no subprocess spawning.
@@ -32,7 +33,7 @@ async fn get_provenance(agent: &Option<std::sync::Arc<crate::agent::Agent>>) ->
 
 // ── Definitions ────────────────────────────────────────────────
 
-pub fn memory_tools() -> [super::Tool; 12] {
+pub fn memory_tools() -> [super::Tool; 11] {
     use super::Tool;
     [
         Tool { name: "memory_render", description: "Read a memory node's content and links.",
@@ -236,20 +237,6 @@ async fn query(args: &serde_json::Value) -> Result<String> {
         .map_err(|e| anyhow::anyhow!("{}", e))
 }
 
-fn output(args: &serde_json::Value) -> Result<String> {
-    let key = get_str(args, "key")?;
-    if key.starts_with("pid-") || key.contains('/') || key.contains("..") {
-        anyhow::bail!("invalid output key: {}", key);
-    }
-    let value = get_str(args, "value")?;
-    let dir = std::env::var("POC_AGENT_OUTPUT_DIR")
-        .map_err(|_| anyhow::anyhow!("no output directory set"))?;
-    let path = std::path::Path::new(&dir).join(key);
-    std::fs::write(&path, value)
-        .with_context(|| format!("writing output {}", path.display()))?;
-    Ok(format!("{}: {}", key, value))
-}
-
 // ── Journal tools ──────────────────────────────────────────────
 
 async fn journal_tail(args: &serde_json::Value) -> Result<String> {

src/agent/tools/mod.rs

@@ -143,7 +143,7 @@ pub async fn dispatch_with_agent(
     let tool = if let Some(ref a) = agent {
         // Only dispatch tools the agent is allowed to use
         let guard = a.state.lock().await;
-        guard.tools.iter().find(|t| t.name == name).copied()
+        guard.tools.iter().find(|t| t.name == name).cloned()
     } else {
         // No agent context — allow all tools (CLI/MCP path)
         tools().into_iter().find(|t| t.name == name)

src/agent/tools/read.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/read.rs — Read file contents
 
 use anyhow::{Context, Result};

src/agent/tools/vision.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/vision.rs — Image viewing tool
 //
 // Reads image files from disk and returns them as base64 data URIs

src/agent/tools/web.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/web.rs — Web fetch and search
 
 use anyhow::{Context, Result};

src/agent/tools/write.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // tools/write.rs — Write file contents
 
 use anyhow::{Context, Result};

src/subconscious/digest.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 // Episodic digest generation: daily, weekly, monthly, auto
 //
 // Three digest levels form a temporal hierarchy: daily digests summarize