A skill directory may hold INSTRUCTIONS.md, with or without SKILL.md. Its body
(frontmatter cut) goes into every system prompt in <skill_instructions>, re-read
on every run: 16 KB per file, 64 KB in total, truncation marked with the file's
path. /skills marks skills with instructions and lists instruction-only dirs.
Skills live in <cwd>/.claude/skills/<name>/SKILL.md (frontmatter name + description).
SkillCatalog re-reads them on every run and the prompt lists name, description and
path; the model reads the full SKILL.md with the read tool when a task matches.
Streamable HTTP/SSE servers from the workspace's .volcanic/mcp/servers.json.
Headers are sealed with AES-GCM; the chat and the visible fields are the
associated data, so only /mcp_add|remove|tools change servers. Tools
<server>__<tool> go live in the session. An unreachable server is skipped
and reported in the system prompt. Keys are redacted from tool results, and
Telegram deletes messages that carry one.
Jobs are prompts or watchers. A reminder is a prompt the agent passes on, so
it lands in the transcript. Stored reminder jobs load as prompts
("Remind me: <text>"). Also records the Coolify deploy target in CLAUDE.md.
- JobScheduler: a stored job whose zone lookup throws no longer fails StartAsync; timer re-armed under the lock;
a delivery cut off by shutdown isn't recorded (one-offs fire again after restart); CancelJobAsync in one step
- Schedules.ParseAt: ISO 8601 with a date only (no machine-clock date for a bare 09:00)
- core: a FollowUp prompt that loses the race to a starting run joins it as a follow-up, not steering
- Telegram: TimeZoneFor tolerates non-numeric targets; RunPromptAsync waits only when queued; one agent dir
- ScriptRunner: bad workspace paths are Failed, not exceptions; zone id helpers share TimeZoneIds.ToIana's rule
- tests: no wall-clock sleeps in scheduler tests; transcript-entry, disabled-scheduler and failing-prompt coverage
- docs: spec notes for the above; README row for the scheduler
