WARDEN-WP-0029: implement plan front door, org posture, desk, freshness

Ship posture-aware access planning: organization_posture=build (axis C),
catalog freshness warnings, warden plan verdicts, localhost founder desk,
and playbook/agent guidance that retire /tmp file-drop patterns.

Compose route catalog + handoff rather than a second routing layer.

src/warden/posture.py

@@ -42,6 +42,16 @@ class MaturityLevel:
     promotion_gate: List[str]
 
 
+@dataclass
+class OrganizationPosture:
+    """Fleet lifecycle posture (WARDEN-WP-0029) — third axis, not env/maturity."""
+
+    id: str
+    summary: str
+    relaxations: List[str]
+    graduation_triggers: List[str]
+
+
 @dataclass
 class PostureCatalog:
     path: Path
@@ -49,6 +59,7 @@ class PostureCatalog:
     maturity_levels: List[MaturityLevel]
     dataclass_floor: Dict[str, str]   # dataclass -> maturity id
     requires_env_posture: str         # lattice: posture a secret fetch requires
+    organization_posture: OrganizationPosture
 
     # --- lookups ----------------------------------------------------------
     def env(self, env_id: str) -> Optional[EnvPosture]:
@@ -184,10 +195,24 @@ def load_posture(path: Optional[Path] = None) -> PostureCatalog:
     if not any(e.id == requires_env for e in env_postures):
         raise PostureError(f"lattice requires_env_posture {requires_env!r} is not an env posture")
 
+    org_raw = raw.get("organization_posture") or {}
+    if not isinstance(org_raw, dict) or not org_raw.get("id"):
+        raise PostureError(
+            "posture descriptors need organization_posture with at least an id "
+            "(WARDEN-WP-0029 third axis)"
+        )
+    organization_posture = OrganizationPosture(
+        id=str(org_raw["id"]),
+        summary=str(org_raw.get("summary") or "").strip(),
+        relaxations=[str(x) for x in (org_raw.get("relaxations") or [])],
+        graduation_triggers=[str(x) for x in (org_raw.get("graduation_triggers") or [])],
+    )
+
     return PostureCatalog(
         path=posture_path,
         env_postures=env_postures,
         maturity_levels=maturity_levels,
         dataclass_floor=dataclass_floor,
         requires_env_posture=requires_env,
+        organization_posture=organization_posture,
     )