Resolve the claude binary to an absolute path before spawning it

LifeOS/install/LIFEOS/TOOLS/Inference.ts

@@ -67,6 +67,32 @@
  */
 
 import { spawn } from "child_process";
+import { existsSync } from "fs";
+
+// Resolve `claude` to an absolute path. Bare `spawn('claude')` relies on PATH,
+// which is fine interactively but ENOENTs under launchd/cron (minimal PATH lacks
+// ~/.local/bin) — the failure that silently wedges any scheduled inference caller.
+let cachedClaudeBin: string | null = null;
+export function resolveClaudeBin(): string {
+  if (cachedClaudeBin) return cachedClaudeBin;
+  const explicit = process.env.CLAUDE_BIN;
+  if (explicit && existsSync(explicit)) return (cachedClaudeBin = explicit);
+  const home = process.env.HOME ?? "";
+  const candidates = [
+    home ? `${home}/.local/bin/claude` : "",
+    home ? `${home}/.claude/local/claude` : "",
+    "/opt/homebrew/bin/claude",
+    "/usr/local/bin/claude",
+    "/usr/bin/claude",
+  ].filter(Boolean);
+  for (const p of candidates) {
+    if (existsSync(p)) return (cachedClaudeBin = p);
+  }
+  for (const dir of (process.env.PATH ?? "").split(":")) {
+    if (dir && existsSync(`${dir}/claude`)) return (cachedClaudeBin = `${dir}/claude`);
+  }
+  return (cachedClaudeBin = "claude"); // last resort: preserve prior behavior
+}
 
 /** The four run levels — mirrors models.ts EffortLevel. */
 export type InferenceLevel = 'low' | 'medium' | 'high' | 'max';
@@ -182,7 +208,7 @@ async function inferenceAttempt(options: InferenceOptions, modelOverride?: strin
     let stdout = '';
     let stderr = '';
 
-    const proc = spawn('claude', args, {
+    const proc = spawn(resolveClaudeBin(), args, {
       env,
       stdio: ['pipe', 'pipe', 'pipe'],
     });

LifeOS/install/LIFEOS/TOOLS/algorithm.ts

@@ -51,6 +51,7 @@ import { resolve, basename, join, dirname } from "path";
 import { spawnSync, spawn } from "child_process";
 import { randomUUID } from "crypto";
 import { generateISATemplate } from "../../../.claude/hooks/lib/isa-template";
+import { resolveClaudeBin } from "./Inference";
 
 // Normalize env path vars that Claude Code injects without shell expansion (LifeOS#1404)
 for (const k of ["LIFEOS_DIR", "LIFEOS_CONFIG_DIR", "PROJECTS_DIR"]) {
@@ -842,7 +843,7 @@ async function runParallelIteration(
   const processes = assignments.map(assignment => {
     const criterion = assignment.criteriaDetails[0]; // One criterion per agent
     const prompt = buildWorkerPrompt(isaPath, assignment.agentId, criterion, iteration);
-    const proc = Bun.spawn(["claude", "-p", prompt,
+    const proc = Bun.spawn([resolveClaudeBin(), "-p", prompt,
       "--allowedTools", "Edit,Write,Bash,Read,Glob,Grep,WebFetch,WebSearch,NotebookEdit",
     ], {
       cwd: dirname(isaPath),
@@ -1437,7 +1438,7 @@ function runInteractive(isaPath: string): void {
   console.log(`  Launching claude...\n`);
 
   // Launch interactive claude session with ISA context
-  const child = spawn("claude", [
+  const child = spawn(resolveClaudeBin(), [
     prompt,
     "--allowedTools", "Edit,Write,Bash,Read,Glob,Grep,WebFetch,WebSearch,Task,TaskCreate,TaskUpdate,TaskList,NotebookEdit",
   ], {
@@ -1503,7 +1504,7 @@ function runIdeate(
   console.log(`  Launching claude...\n`);
 
   // Launch interactive claude session with ideate context
-  const child = spawn("claude", [
+  const child = spawn(resolveClaudeBin(), [
     prompt,
     "--allowedTools", "Edit,Write,Bash,Read,Glob,Grep,WebFetch,WebSearch,Task,TaskCreate,TaskUpdate,TaskList,NotebookEdit",
   ], {