[Sync] replace the flat layout with the unified stow tree

Supersedes the old flat .config/ layout (last published 2026-06-28) with the
private repo's structure: one shared base plus per-host overlays.

- packages: common/ gui/ lw/ fl/ wm/ plus install.sh and bin/ tooling
  (dotsync, reconcile-hyde.sh)
- new README covering the layout, deploy order and the HyDE dependency
- current HyDE waybar rig (layouts/, cava), pi agent extensions, claude/
  config, tmux, presenterm, aichat roles
- fish: kp (keepassxc-cli + fzf picker, db path from $KP_DB) and
  bind_M_n_history (alt+1..9 recalls the nth history entry)
- drops cruft that should never have been tracked: the duplicate top-level
  .pi/ copy, btop.log, zellij config.kdl.bak, fish_variables
- .pi/agent/auth.json is gitignored; auth.json.example ships instead

Host-specific work sessions and the personal backlog stay in the private
tree. Endpoint locators in the llamacpp/whisper guides are placeholders
($SERVER, <own-domain>) — the guides themselves stay, since they are the
useful part.

common/.config/claude/StatusBar.md

@@ -0,0 +1,76 @@
+# Status line (`statusline.py`)
+
+The custom Claude Code status line, ordered **work info (left) → system info (right)**,
+segments joined by a light-gray `│`. It's **responsive**: always a single line — if the
+rendered width would exceed the terminal (`$COLUMNS`, which Claude Code re-exports on
+resize), trailing (lowest-priority) segments are dropped from the right until it fits.
+
+Wide — everything:
+
+```
+📁 ~/.dots │ 🌿 .dots main* │ 🤖 Opus 4.8 (1M) · xhigh │ 📝 84% (843k) │ 📊 34% 2h54m │ 💰 $0.40 $12.00/h │ 💾 81%
+```
+
+Narrow — trailing segments trimmed:
+
+```
+📁 ~/.dots │ 🌿 .dots main* │ 🤖 Opus 4.8 (1M) · xhigh │ 📝 84% (843k) │ 📊 34% 2h54m │ 💰 $0.40 $12.00/h
+```
+
+Every segment is defensive: if its data is missing or a command fails, the segment is
+simply omitted (the bar never crashes the UI). Secondary detail (the parts in light gray)
+is supplementary to the main colored value.
+
+## Live segments
+
+| | Segment | Shows | Notes |
+|---|---|---|---|
+| | **Vim mode** | `[I]`/`[N]`/`[V]` editor mode | only with `editorMode: vim`; pair with `hideVimModeIndicator: true` so the built-in one doesn't duplicate it |
+| 📁 | **Directory** | Current working dir, with `~` for home | cyan |
+| 🌿 | **Git** | `repo branch` + `*` if dirty + `↑N`/`↓N` ahead/behind upstream | repo = magenta; branch = green when clean, yellow + red `*` when dirty; `↑` cyan, `↓` yellow. Omitted outside a repo |
+| 🤖 | **Model** | Active model display name + `· effort` level (`low`/`medium`/`high`/`xhigh`) | name = blue, effort = light gray; effort omitted for models without the param |
+| 📝 | **Context** | `% of context window used` + `(Nk)` tokens | window = 1M for `[1m]` models, else 200k. Adds a red **⚠compact** at ≥80% |
+| 📊 | **5h usage** | `% of the 5-hour rolling limit used` + time until it resets | from `rate_limits.five_hour`; Pro/Max only, and absent until the first API response of a session |
+| 💰 | **Cost** | `$` session cost so far + `$/h` burn rate | burn rate shown once the session exceeds ~30s |
+| 💾 | **Disk** | `% used` of the filesystem at the cwd | from `statvfs` |
+
+## Colour legend
+
+Most numbers are **green / yellow / red** by threshold — green = healthy, red = needs
+attention. Light gray = secondary detail. Thresholds (`green < … < yellow < … ≤ red`):
+
+| Segment | green | yellow | red |
+|---|---|---|---|
+| Context | `< 50%` | `50–80%` | `≥ 80%` (⚠compact) |
+| 5h usage | `< 50%` | `50–80%` | `≥ 80%` |
+| Disk | `< 75%` | `75–90%` | `≥ 90%` |
+
+> Light gray is `\033[37m`; dimming (`\033[2m`) is disabled because it blended the gray
+> detail text into dark terminal backgrounds. To go brighter, set `"gray"` to `\033[97m`
+> (bright white) in the `C` table near the top of `statusline.py`.
+
+## Optional segments (defined but not shown)
+
+These functions exist in `statusline.py` but aren't in the output. Enable one by adding it
+to the `work` or `system` list in `main()`:
+
+RAM/CPU/temp were **retired 2026-07-26**: the status line only refreshes on message
+events, so system metrics sat visibly stale between turns — the tmux status bar
+(`tmux/scripts/`) owns live system metrics now.
+
+| | Function | Shows |
+|---|---|---|
+| 🧠 | `ram_segment` | `% used` + `used/totalG` from `/proc/meminfo` (green `<70%` / yellow / red `≥85%`) |
+| 🖥️ | `cpu_segment` | `% busy` (diffed `/proc/stat` snapshot) + loadavg + cores (green `<60%` / red `≥85%`) |
+| 🌡️ | `temp_segment` | hottest CPU thermal zone °C (green `<60` / red `≥80`) |
+| ✏️ | `velocity_segment` | `+added/-removed` lines this session + lines/min |
+| ♻️ | `cache_segment` | prompt-cache hit % (higher is better) |
+| ⚙️ | `api_segment` | share of wall-clock time spent in API/inference |
+| | `version_segment` | Claude Code version (`vX.Y.Z`) |
+| 🎨 | `style_segment` | active output-style name |
+
+## Where it lives
+
+`statusline.py` is tracked in this repo and symlinked to `~/.claude/statusline.py`;
+`settings.json` runs it via `statusLine` (`/usr/bin/env python3 ~/.claude/statusline.py`).
+Edits take effect on the next status refresh.