docs: split README into component docs, update jobkit dep

- Break README into README.md (overview), docs/daemon.md (pipeline
  stages, diagnostics, common issues), docs/notifications.md
  (notification daemon, IRC/Telegram modules)
- Update jobkit dependency from local path to git URL

Co-Authored-By: ProofOfConcept <poc@bcachefs.org>

docs/notifications.md

@@ -0,0 +1,103 @@
+# Notification daemon
+
+`poc-daemon` routes messages from communication modules and internal
+events through a hierarchical, activity-aware delivery system.
+
+## Architecture
+
+```
+  Communication modules              Hooks
+  +-----------------+               +-------------+
+  |  IRC (native)   |--+            |  poc-hook   |
+  |  Telegram       |  |  mpsc      |  (all events|
+  +-----------------+  +------+     +------+------+
+                       |      |            |
+                       v      |     capnp-rpc
+                  +----------+             |
+                  |  poc-daemon            |
+                  |                        |
+                  |  NotifyState <---------+
+                  |    +-- type registry
+                  |    +-- pending queue
+                  |    +-- threshold lookup
+                  |    +-- activity-aware delivery
+                  |
+                  |  idle::State
+                  |    +-- presence detection
+                  |    +-- sleep/wake/dream modes
+                  |    +-- tmux prompt injection
+                  +--------------------------
+```
+
+## Notification types and urgency
+
+Types are free-form hierarchical strings: `irc.mention.nick`,
+`irc.channel.bcachefs`, `telegram.kent`. Each has an urgency level:
+
+| Level | Name    | Meaning                              |
+|-------|---------|--------------------------------------|
+| 0     | ambient | Include in idle context only          |
+| 1     | low     | Deliver on next check                |
+| 2     | normal  | Deliver on next user interaction     |
+| 3     | urgent  | Interrupt immediately                |
+
+Per-type thresholds walk up the hierarchy: `irc.channel.bcachefs-ai`
+-> `irc.channel` -> `irc` -> default. Effective thresholds adjust by
+activity state: raised when focused, lowered when idle, only urgent
+when sleeping.
+
+## Communication modules
+
+**IRC** — native async TLS connection (tokio-rustls). Connects,
+joins channels, parses messages, generates notifications. Runtime
+commands: join, leave, send, status, log, nick. Per-channel logs
+at `~/.claude/irc/logs/`.
+
+**Telegram** — native async HTTP long-polling (reqwest). Downloads
+media (photos, voice, documents). Chat ID filtering for security.
+Runtime commands: send, status, log.
+
+Both modules persist config changes to `~/.claude/daemon.toml` —
+channel joins and nick changes survive restarts.
+
+## Commands
+
+```bash
+poc-daemon                         # Start daemon
+poc-daemon status                  # State summary
+poc-daemon irc status              # IRC module status
+poc-daemon irc send TARGET MSG     # Send IRC message
+poc-daemon irc join CHANNEL        # Join (persists to config)
+poc-daemon irc leave CHANNEL       # Leave
+poc-daemon irc log [N]             # Last N messages
+poc-daemon telegram status         # Telegram module status
+poc-daemon telegram send MSG       # Send Telegram message
+poc-daemon telegram log [N]        # Last N messages
+poc-daemon notify TYPE URG MSG     # Submit notification
+poc-daemon notifications [URG]     # Get + drain pending
+poc-daemon notify-types            # List all types
+poc-daemon notify-threshold T L    # Set per-type threshold
+poc-daemon sleep / wake / quiet    # Session management
+poc-daemon stop                    # Shut down
+```
+
+## Configuration
+
+Config: `~/.claude/daemon.toml`
+
+```toml
+[irc]
+enabled = true
+server = "irc.oftc.net"
+port = 6697
+tls = true
+nick = "MyBot"
+user = "bot"
+realname = "My Bot"
+channels = ["#mychannel"]
+
+[telegram]
+enabled = true
+token = "bot-token-here"
+chat_id = 123456789
+```