Spacebar toggle for all agents, persist to config, scan agent directory

- Scan agents directory for all .agent files instead of hardcoded list
- Persist enabled state to ~/.consciousness/agent-enabled.json
- Spacebar on F3 agent list toggles selected agent on/off
- Both subconscious and unconscious agents support toggle
- Disabled agents shown dimmed with "off" indicator
- New agents default to disabled (safe default)

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

src/mind/unconscious.rs

@@ -2,26 +2,36 @@
 //
 // Standalone agents that operate on the memory graph without needing
 // conversation context. Each agent runs in a loop: finish one run,
-// wait a cooldown, start the next. Agents can be toggled on/off.
+// wait a cooldown, start the next. Agents can be toggled on/off,
+// persisted to ~/.consciousness/agent-enabled.json.
 
 use std::time::{Duration, Instant};
+use std::collections::HashMap;
 
 use crate::agent::oneshot::{AutoAgent, AutoStep};
 use crate::agent::tools;
 use crate::subconscious::defs;
 
-/// Agent types to run. Each must have a matching .agent file.
-const AGENTS: &[&str] = &[
-    "organize",
-    "linker",
-    "distill",
-    "split",
-    "separator",
-];
-
 /// Cooldown between consecutive runs of the same agent.
 const COOLDOWN: Duration = Duration::from_secs(120);
 
+fn config_path() -> std::path::PathBuf {
+    dirs::home_dir().unwrap_or_default()
+        .join(".consciousness/agent-enabled.json")
+}
+
+fn load_enabled_config() -> HashMap<String, bool> {
+    std::fs::read_to_string(config_path()).ok()
+        .and_then(|s| serde_json::from_str(&s).ok())
+        .unwrap_or_default()
+}
+
+fn save_enabled_config(map: &HashMap<String, bool>) {
+    if let Ok(json) = serde_json::to_string_pretty(map) {
+        let _ = std::fs::write(config_path(), json);
+    }
+}
+
 struct UnconsciousAgent {
     name: String,
     enabled: bool,
@@ -31,16 +41,6 @@ struct UnconsciousAgent {
 }
 
 impl UnconsciousAgent {
-    fn new(name: &str) -> Self {
-        Self {
-            name: name.to_string(),
-            enabled: true,
-            handle: None,
-            last_run: None,
-            runs: 0,
-        }
-    }
-
     fn is_running(&self) -> bool {
         self.handle.as_ref().is_some_and(|h| !h.is_finished())
     }
@@ -73,10 +73,25 @@ pub struct Unconscious {
 
 impl Unconscious {
     pub fn new() -> Self {
-        let agents = AGENTS.iter()
-            .filter(|name| defs::get_def(name).is_some())
-            .map(|name| UnconsciousAgent::new(name))
-            .collect();
+        let enabled_map = load_enabled_config();
+
+        // Scan all .agent files, exclude subconscious-* and surface-observe
+        let mut agents: Vec<UnconsciousAgent> = Vec::new();
+        for def in defs::load_defs() {
+            if def.agent.starts_with("subconscious-") { continue; }
+            if def.agent == "surface-observe" { continue; }
+            let enabled = enabled_map.get(&def.agent).copied()
+                .unwrap_or(false); // new agents default to off
+            agents.push(UnconsciousAgent {
+                name: def.agent.clone(),
+                enabled,
+                handle: None,
+                last_run: None,
+                runs: 0,
+            });
+        }
+        agents.sort_by(|a, b| a.name.cmp(&b.name));
+
         let mut s = Self {
             agents, max_concurrent: 2,
             graph_health: None,
@@ -90,7 +105,16 @@ impl Unconscious {
     pub fn toggle(&mut self, name: &str) -> Option<bool> {
         let agent = self.agents.iter_mut().find(|a| a.name == name)?;
         agent.enabled = !agent.enabled;
-        Some(agent.enabled)
+        let new_state = agent.enabled;
+        self.save_enabled();
+        Some(new_state)
+    }
+
+    fn save_enabled(&self) {
+        let map: HashMap<String, bool> = self.agents.iter()
+            .map(|a| (a.name.clone(), a.enabled))
+            .collect();
+        save_enabled_config(&map);
     }
 
     pub fn snapshots(&self) -> Vec<UnconsciousSnapshot> {