add forge daemon command for soul Engram lifecycle management

- daemon.el: launchd plist generation, install/start/stop/status/wire
- forge.el: dispatch daemon command, add to usage
- install.el: auto-register soul as launchd agent after install
- schema.el: add FORGE_DIR constant for absolute path references

forge daemon install --all installs all 19 souls as resident launchd
agents with KeepAlive. forge daemon wire registers each soul as an
Engram peer to every other soul. forge daemon status health-checks all.

src/schema.el

@@ -8,6 +8,17 @@
 let ENGRAM_DEFAULT_URL: String = "http://localhost:8742"
 let FORGE_VERSION: String = "0.1.0"
 
+// Absolute forge root — used by daemon.el and install.el for launchd plists
+// and per-soul data paths that must be absolute even when invoked from a
+// different working directory.
+let FORGE_DIR: String = "/Users/will/Development/neuron-technologies/forge"
+
+// Canonical directory layout — enforced by the tool, not by convention.
+let FORGE_SEEDS_DIR: String  = "seeds"    // compiled seed JSON files
+let FORGE_PROBES_DIR: String = "probes"   // raw .forge interview responses
+let FORGE_LOG_DIR: String    = "log"      // session and event logs
+let FORGE_LOG_FILE: String   = "log/sessions.jsonl"  // append-only session log
+
 // ── Environment accessors ──────────────────────────────────────────────────────
 
 fn engram_url() -> String {
@@ -28,6 +39,32 @@ fn anthropic_key() -> String {
     return k
 }
 
+// ── Directory helpers ─────────────────────────────────────────────────────────
+
+// ensure_dirs — create canonical forge directories if they don't exist.
+// Call once at startup from any command that writes files.
+fn ensure_dirs() -> Void {
+    if !fs_exists(FORGE_SEEDS_DIR)  { fs_mkdir(FORGE_SEEDS_DIR) }
+    if !fs_exists(FORGE_PROBES_DIR) { fs_mkdir(FORGE_PROBES_DIR) }
+    if !fs_exists(FORGE_LOG_DIR)    { fs_mkdir(FORGE_LOG_DIR) }
+}
+
+// log_event — append a JSON-lines entry to log/sessions.jsonl.
+// event:   "research" | "install" | "summon" | "probe" | "compile"
+// subject: display name or comma-joined list for multi-summon
+// detail:  arbitrary context string (root_id, conv_id, file path, etc.)
+fn log_event(event: String, subject: String, detail: String) -> Void {
+    ensure_dirs()
+    let ts: Int = unix_timestamp()
+    let entry: String = "{\"ts\":" + int_to_str(ts) +
+        ",\"event\":\"" + str_escape_json(event) +
+        "\",\"subject\":\"" + str_escape_json(subject) +
+        "\",\"detail\":\"" + str_escape_json(detail) + "\"}\n"
+    // Read existing log and append (EL has fs_write but not fs_append natively)
+    let existing: String = fs_read(FORGE_LOG_FILE)
+    fs_write(FORGE_LOG_FILE, existing + entry)
+}
+
 // ── String utilities ──────────────────────────────────────────────────────────
 
 // str_escape_json — escape a string for safe embedding in a JSON value.