refactor(worker): delete per-job OpenCode container path, host_port split, and dead docker helpers

Claude-Session: https://claude.ai/code/session_01ScyZ1NhfN84LAnHpwhfEQk

apps/agent-worker/src/env.ts

@@ -27,25 +27,14 @@ export const env = {
     'docker',
   containerVolumeOptions:
     process.env.SPOON_AGENT_CONTAINER_VOLUME_OPTIONS?.trim(),
-  containerAccess:
-    process.env.SPOON_AGENT_CONTAINER_ACCESS?.trim() === 'host_port'
-      ? 'host_port'
-      : 'network',
   jobImage:
     process.env.SPOON_AGENT_JOB_IMAGE?.trim() ?? 'spoon-agent-job:latest',
-  // Interactive terminal: image for the persistent shell container (defaults to
-  // the job image), the secret shared with the Next app for verifying terminal
-  // tokens, and how long an idle terminal container survives before cleanup.
-  terminalImage:
-    process.env.SPOON_AGENT_TERMINAL_IMAGE?.trim() ??
-    process.env.SPOON_AGENT_JOB_IMAGE?.trim() ??
-    'spoon-agent-job:latest',
+  // Secret shared with the Next app for verifying interactive terminal tokens.
   terminalSecret:
     process.env.SPOON_AGENT_TERMINAL_SECRET?.trim() ??
     process.env.SPOON_AGENT_WORKER_INTERNAL_TOKEN?.trim() ??
     process.env.SPOON_WORKER_TOKEN?.trim() ??
     '',
-  terminalIdleMs: intEnv('SPOON_AGENT_TERMINAL_IDLE_MS', 1_800_000),
   // How long a per-user box container survives with no active jobs/terminals.
   boxIdleMs: intEnv('SPOON_AGENT_BOX_IDLE_MS', 1_800_000),
   // Dev-only: exit if the parent dev runner dies, so the worker never orphans
@@ -60,7 +49,6 @@ export const env = {
     process.env.SPOON_AGENT_WORKER_INTERNAL_TOKEN?.trim() ??
     process.env.SPOON_WORKER_TOKEN?.trim() ??
     '',
-  maxConcurrentJobs: intEnv('SPOON_AGENT_MAX_CONCURRENT_JOBS', 1),
   jobTimeoutMs: intEnv('SPOON_AGENT_JOB_TIMEOUT_MS', 1_800_000),
   githubAppId: requiredEnv('GITHUB_APP_ID'),
   githubPrivateKey: requiredEnv('GITHUB_APP_PRIVATE_KEY').replaceAll(