feat: dream-cycle time budget + default per-call timeout (guard C)

Belt-and-suspenders so no dream pass can run unchecked for hours:
- llm.complete() now always bounds the OpenAI/mi50 request: default 300s +
  max_retries=0 instead of the SDK's 600s x2 (~30 min). One change bounds every
  consolidation/introspection call (profile/era/narrative/reflect/think), not
  just summaries. Live chat (chat_call*) is a separate path, unaffected.
- dream_cycle() enforces a 20-min wall-clock budget, checked between stages;
  once past it, remaining stages are skipped, it logs 'stopped early (over
  budget)', and notify.push() pings Brian. Paired with the host watchdog (A) as
  an independent fallback.

Tests: default timeout/max_retries threaded into complete(); an over-budget pass
skips later stages + pings. 178 pass, ruff clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015yrEb5qpPGv2FjyxrB7LLk

lyra/dream.py

@@ -26,7 +26,8 @@ import time
 from datetime import datetime, timezone
 
 from lyra import (
-    config, era, feeds, logbus, memory, narrative, poker, profile, self_state, summary, thoughts,
+    config, era, feeds, logbus, memory, narrative, notify, poker, profile, self_state,
+    summary, thoughts,
 )
 from lyra.llm import Backend
 from lyra.summary import SUMMARIZE_AFTER
@@ -34,6 +35,17 @@ from lyra.summary import SUMMARIZE_AFTER
 # A drive at/above this has built up enough to act on.
 THRESHOLD = 0.6
 
+# Wall-clock ceiling for a single pass. Every consolidation/introspection call is
+# individually bounded (llm.complete's default timeout), but this caps the whole
+# pass: once exceeded, remaining stages are skipped and Brian is pinged — so a slow
+# or wedged MI50 can never grind for hours unattended. The host watchdog (A) is the
+# independent fallback if this ever fails to fire.
+DREAM_CYCLE_BUDGET_SEC = 20 * 60
+
+
+def _over_budget(deadline: float) -> bool:
+    return time.monotonic() > deadline
+
 # How much backlog saturates each pressure (the drive reaches ~1.0 at this level).
 CONTINUITY_FULL = 4   # ripe (summary-needing) sessions
 COHERENCE_FULL = 10   # gists not yet folded into the profile
@@ -96,9 +108,12 @@ def dream_cycle(backend: Backend | None = None, force: bool = False) -> dict:
         logbus.log("error", "daily digest failed", error=str(exc)[:160])
 
     actions: list[str] = []
+    # Cap the whole pass: skip any stage we reach after the deadline (checked
+    # between stages; each call is already individually bounded).
+    deadline = time.monotonic() + DREAM_CYCLE_BUDGET_SEC
 
     # --- continuity: compact raw sessions into gists ---
-    if force or drives["continuity"] >= THRESHOLD:
+    if (force or drives["continuity"] >= THRESHOLD) and not _over_budget(deadline):
         report = summary.summarize_all(backend=backend)
         actions.append(f"consolidated {report['summarized']} sessions")
         drives["continuity"] = 0.0
@@ -108,7 +123,7 @@ def dream_cycle(backend: Backend | None = None, force: bool = False) -> dict:
         drives["coherence"] = _clamp(profile_lag / COHERENCE_FULL)
 
     # --- coherence: fold gists up into profile / eras / narrative ---
-    if force or drives["coherence"] >= THRESHOLD:
+    if (force or drives["coherence"] >= THRESHOLD) and not _over_budget(deadline):
         profile.rebuild_profile(backend=backend)
         era.rebuild_eras(backend=backend)
         narrative.rebuild_narrative(backend=backend)
@@ -124,7 +139,7 @@ def dream_cycle(backend: Backend | None = None, force: bool = False) -> dict:
             logbus.log("error", "villain merge scan failed", error=str(exc)[:200])
 
     # --- curiosity: reflect and evolve the self, then advance the thought loop ---
-    if force or drives["curiosity"] >= THRESHOLD:
+    if (force or drives["curiosity"] >= THRESHOLD) and not _over_budget(deadline):
         # reflect()/think() self-resolve to the *introspection* backend (her voice),
         # which can differ from the consolidation backend above — don't pass `backend`.
         self_state.reflect(source="dream")  # writes state + journal itself
@@ -139,6 +154,17 @@ def dream_cycle(backend: Backend | None = None, force: bool = False) -> dict:
             logbus.log("error", "thought loop failed", error=str(exc)[:200])
         drives["curiosity"] = CURIOSITY_FLOOR
 
+    if _over_budget(deadline):
+        logbus.log("error", "dream cycle over budget — stopped early",
+                   budget_min=DREAM_CYCLE_BUDGET_SEC // 60, done=actions)
+        actions.append("stopped early (over budget)")
+        notify.push(
+            "Lyra — dream cycle over budget",
+            f"A dream pass ran past {DREAM_CYCLE_BUDGET_SEC // 60} min and stopped early. "
+            "The MI50 backend may be slow or wedged — worth a look.",
+            tags="warning",
+        )
+
     if not actions:
         actions.append("rested (nothing past threshold)")