[Fix] Internal timers appear and connection resets stop tasks

[roomote-roomote]

​Opened on behalf of @mrubens. Follow up by mentioning @roomote-roomote, in the web UI, or in Slack.

What changed

• Automatically create the internal Session follow-through timer only in the server-owned path after a successful human-requested task launch.
• Remove internal visibility from the model-callable wakeup schemas so user reminders always remain visible, even if model input includes an extra internal field.
• Hand an exhausted OpenCode Connection reset by server retry into Roomote's existing bounded provider recovery instead of terminating the coding task.
• Keep visible and internal wakeups in separate deduplication identities, retain queued user follow-ups during recovery, and leave unrelated or explicitly terminal provider failures unchanged.

Why this change was made

Automatic follow-through depended on a model-controlled visibility flag: omitting it exposed the internal timer, while accepting it could let an ordinary reminder be hidden. The runtime now owns that distinction directly. Separately, OpenCode's internal retry ceiling converted a transient connection reset into a terminal error before Roomote's standard recovery budget could run.

Impact

Internal Session maintenance no longer appears as a user reminder, model-created reminders cannot opt out of the composer, and coding tasks can continue automatically after bounded OpenCode retries exhaust on this transport reset. Authentication, credits, policy, and other terminal failures retain their existing handling.

[roomote-community]

No new code issues found. See task

• Restrict the internal wakeup flag to system-owned follow-through scheduling so user reminders cannot be hidden.

_{Reviewed 25ddbf1}

[roomote-roomote]

Resolved the internal-wakeup ownership issue in 25ddbf1b: model-created reminders can no longer set hidden visibility, and successful human-requested task launches schedule the internal follow-through timer through a server-owned path. See the task.