feat: implement dynamic decky mutation and fix dot-separated INI sections

decnet/ini_loader.py

@@ -54,6 +54,7 @@ class DeckySpec:
     archetype: str | None = None
     service_config: dict[str, dict] = field(default_factory=dict)
     nmap_os: str | None = None     # explicit OS family override (linux/windows/bsd/embedded/cisco)
+    mutate_interval: int | None = None
 
 
 @dataclass
@@ -71,6 +72,7 @@ class IniConfig:
     gateway: str | None = None
     interface: str | None = None
     log_target: str | None = None
+    mutate_interval: int | None = None
     deckies: list[DeckySpec] = field(default_factory=list)
     custom_services: list[CustomServiceSpec] = field(default_factory=list)
 
@@ -91,12 +93,23 @@ def load_ini(path: str | Path) -> IniConfig:
         cfg.interface = g.get("interface")
         cfg.log_target = g.get("log_target") or g.get("log-target")
 
+    from decnet.services.registry import all_services
+    known_services = set(all_services().keys())
+
     # First pass: collect decky sections and custom service definitions
     for section in cp.sections():
         if section == "general":
             continue
+        
+        # A service sub-section is identified if the section name has at least one dot
+        # AND the last segment is a known service name.
+        # e.g. "decky-01.ssh" -> sub-section
+        # e.g. "decky.webmail" -> decky section (if "webmail" is not a service)
         if "." in section:
-            continue  # subsections handled in second pass
+            _, _, last_segment = section.rpartition(".")
+            if last_segment in known_services:
+                continue  # sub-section handled in second pass
+
         if section.startswith("custom-"):
             # Bring-your-own service definition
             s = cp[section]
@@ -115,6 +128,15 @@ def load_ini(path: str | Path) -> IniConfig:
         services = [sv.strip() for sv in svc_raw.split(",")] if svc_raw else None
         archetype = s.get("archetype")
         nmap_os = s.get("nmap_os") or s.get("nmap-os") or None
+        
+        mi_raw = s.get("mutate_interval") or s.get("mutate-interval")
+        mutate_interval = None
+        if mi_raw:
+            try:
+                mutate_interval = int(mi_raw)
+            except ValueError:
+                raise ValueError(f"[{section}] mutate_interval= must be an integer, got '{mi_raw}'")
+
         amount_raw = s.get("amount", "1")
         try:
             amount = int(amount_raw)
@@ -125,7 +147,7 @@ def load_ini(path: str | Path) -> IniConfig:
 
         if amount == 1:
             cfg.deckies.append(DeckySpec(
-                name=section, ip=ip, services=services, archetype=archetype, nmap_os=nmap_os,
+                name=section, ip=ip, services=services, archetype=archetype, nmap_os=nmap_os, mutate_interval=mutate_interval,
             ))
         else:
             # Expand into N deckies; explicit ip is ignored (can't share one IP)
@@ -141,6 +163,7 @@ def load_ini(path: str | Path) -> IniConfig:
                     services=services,
                     archetype=archetype,
                     nmap_os=nmap_os,
+                    mutate_interval=mutate_interval,
                 ))
 
     # Second pass: collect per-service subsections [decky-name.service]
@@ -149,7 +172,11 @@ def load_ini(path: str | Path) -> IniConfig:
     for section in cp.sections():
         if "." not in section:
             continue
-        decky_name, _, svc_name = section.partition(".")
+        
+        decky_name, dot, svc_name = section.rpartition(".")
+        if svc_name not in known_services:
+            continue # not a service sub-section
+            
         svc_cfg = {k: v for k, v in cp[section].items()}
         if decky_name in decky_map:
             # Direct match — single decky