chore: stage I1 -- repo cleanup, minimal README

Working plans (docs/development, docs/design redesign notes) removed; the
two developer guides moved to docs/developer/. README cut to devices,
flashing, links and building (Wio Tracker L2 added); its feature list and
doc tables moved to docs/solo_features/README.md. RELEASE.md describes the
Solo release flow. Upstream's GitHub Pages workflow (docs.meshcore.io)
dropped, CLAUDE.md untracked, Buy Me a Coffee back in FUNDING.yml.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/solo_features/README.md

@@ -0,0 +1,70 @@
+# MeshCore Solo — documentation
+
+## Documents
+
+| Document                                                                   | Description                                                           |
+| -------------------------------------------------------------------------- | --------------------------------------------------------------------- |
+| [Messages Screen](./message_screen/message_screen.md)   | Sending messages, context menus, reply, navigate to / save shared locations, Notif/Melody overrides |
+| [Favourites Dial](./favourites_dial/favourites_dial.md) | Pinned contacts grid, unread badges, pin/unpin                        |
+| [Clock Screen](./clock_screen/clock_screen.md)          | Clock page, date, configurable data fields, alarm / timer / stopwatch  |
+| [Settings Screen](./settings_screen/settings_screen.md) | All settings sections with values and interactions                    |
+| [Screen Lock](./screen_lock/screen_lock.md)             | Lock/unlock sequence, lock screen, auto-lock                          |
+| [Tools Screen](./tools_screen/tools_screen.md)          | GPS trail & waypoints, compass, navigation, nearby nodes, ringtone editor, remote bot, auto-advert, live location sharing, locator, diagnostics, repeater, remote admin |
+| [External Keyboard & Joystick](./external_keyboard.md)  | CardKB shortcuts, Full vs Compact mode, wired joystick, Heltec V3/V4 wiring |
+| [Build Flags](./build_flags.md)                        | Every optional `-D` build flag a solo build understands — GPIO, Hall sensor, buzzer/vibration, GPS switch, display/battery tuning |
+| [Solo UI framework](../developer/ui-framework.md)                    | **Developer guide** — the reusable building blocks (screens, lists, popups, mini-icons, geo/persistence helpers) and how to add a new feature |
+| [UI Core](../developer/ui-core.md) | **Developer guide** — the frontend-independent layer (models, settings schema, events) shared by the OLED/e-ink UI and the LVGL touch UI |
+
+## Upstream MeshCore
+
+| Document                                           | Description                                      |
+| -------------------------------------------------- | ------------------------------------------------ |
+| [FAQ](../faq.md)                               | Frequently asked questions                       |
+| [CLI Commands](../cli_commands.md)             | Commands for repeaters, room servers and sensors |
+| [Terminal Chat CLI](../terminal_chat_cli.md)   | Commands for the terminal chat client            |
+| [Companion Protocol](../companion_protocol.md) | Serial/BLE frame protocol between device and app |
+| [Packet Format](../packet_format.md)           | LoRa packet structure                            |
+| [QR Codes](../qr_codes.md)                     | Channel and contact QR code formats              |
+
+## Features
+
+- Extended language support — one unified 6×9 font (Latin, Greek, Cyrillic) plus on-screen keyboard alphabets for Cyrillic, Greek, Polish, Czech, Slovak, German, French, Spanish, Portuguese and Nordic. Pick two in Settings › Keyboard (**Main**/**Additional**) and switch between them while typing
+
+- Enabled sensor screens with support for onboard sensors (temperature, humidity, pressure, luminosity, CO₂) and GPS data
+
+- **GPS navigation** — a full navigation suite that needs no extra hardware (details in the [Tools Screen](./tools_screen/tools_screen.md) docs):
+
+  - **Waypoints** — mark a spot (car, camp, water…) with a short label, see it on the trail map, and get live bearing + distance back to it; the list always offers a one-tap backtrack to where your trail started
+  - **GPS compass** — heading derived from course-over-ground (no magnetometer needed), shown as a clear scrolling heading tape with a large degrees + cardinal readout
+  - **Navigate to anything** — a saved waypoint, a node straight from Nearby Nodes, or a location someone shares with you in a message
+  - **Share & save locations** — send a waypoint to a contact or channel; on the other end, navigate to or save any shared location with one menu
+  - **Live location sharing** — broadcast your position over the mesh as you move (movement-gated, to a channel or contact) and see others who share theirs as pins on the map and live distance/bearing in Nearby
+  - **Locator** — arm a geofence around a waypoint or a person, get alerted on arrive/leave or near/far, with an optional homing beeper that speeds up as you close in. Set from the Locator screen, Nearby Nodes, or Waypoints; target shown as a flag on the map
+  - **GPS trail** — background route recording with an auto-fit map (waypoints + live position), summary stats, auto-pause on stops, and [GPX export](../../README.md#documentation)
+  - **Metric or imperial** — one global Units setting drives every distance and speed across the UI
+
+- [Messages Screen](./message_screen/message_screen.md) — view and send messages, open message details, reply with quick messages or custom text, navigate to / save locations shared in a message, per-channel notification and melody overrides, add/edit/delete channels on-device
+
+- [Favourites Dial](./favourites_dial/favourites_dial.md) — pin up to six contacts for quick access from the home screen
+
+- [Settings Screen](./settings_screen/settings_screen.md) — configure display, sound, home page order, radio and system settings
+
+- [Clock Screen](./clock_screen/clock_screen.md) — view time and date plus up to three configurable data fields, with built-in clock tools (one-shot alarm, countdown timer, stopwatch)
+
+- [Screen Lock](./screen_lock/screen_lock.md) — lock the device to prevent accidental keypresses, with a lock screen showing time and sensor data
+
+- [Tools Screen](./tools_screen/tools_screen.md) — GPS trail & waypoints, compass, nearby nodes (with ping & navigate), ringtone editor, remote bot, auto-advert, live location sharing, locator, diagnostics, repeater, remote admin
+
+- [External Keyboard & Joystick](./external_keyboard.md) — optional, auto-detected: **CardKB** for typing without the on-screen grid (Fn+Enter submits, Fn+letter picks an accent, Tab is Hold-Enter, Fn+Esc locks), plus a **wired joystick** for boards without one. Compact mode makes CardKB-only operation practical
+
+- **Auto pwr** (Settings › Radio) — Adaptive Power Control: trims actual TX power on strong links (from ACK SNR) and ramps back up to the configured ceiling on weak/lost links; the home screen shows the live power
+
+## E-ink Display (Wio Tracker L1)
+
+The e-ink variant targets the Wio Tracker L1 fitted with a 2.13″ GxEPD2 panel (250 × 122 px). Every screen is adapted for it:
+
+- **Adaptive layout** — every screen reflows correctly in both landscape (250 × 122) and portrait (122 × 250) orientations
+- **Display rotation** — configurable in Settings › Display; applied immediately and persisted across reboots
+- **Joystick rotation** — independent of display rotation; useful for custom enclosures
+- **Full refresh interval** — configurable in Settings › Display; reduces ghosting on long sessions
+- **Clock seconds suppressed by default** — seconds are hidden to reduce per-second panel refreshes and extend display lifetime; re-enable in Settings › Display

docs/solo_features/message_screen/message_screen.md

@@ -25,7 +25,7 @@ Press **Enter** on a contact or channel to open its history, then press **Enter*
 - **Custom message** — opens the on-screen keyboard
 - **Q1–Q10** — quick reply templates editable in Settings › Messages
 
-While typing, **UP** from the top letter row enters cursor mode — LEFT/RIGHT move the insertion point, UP/DOWN jump to start/end (then to the grid on a second press), Enter/Cancel exit from anywhere — so you can edit mid-text, not just at the end. **Hold Enter** on a letter with accented variants (a, e, c, n, o, s, z…) opens a one-row accent popup instead — LEFT/RIGHT picks, Enter inserts, Cancel dismisses. Full key set (Shift, T9, Cyrillic/Greek) in the [UI framework guide](../../design/solo_ui_framework.md).
+While typing, **UP** from the top letter row enters cursor mode — LEFT/RIGHT move the insertion point, UP/DOWN jump to start/end (then to the grid on a second press), Enter/Cancel exit from anywhere — so you can edit mid-text, not just at the end. **Hold Enter** on a letter with accented variants (a, e, c, n, o, s, z…) opens a one-row accent popup instead — LEFT/RIGHT picks, Enter inserts, Cancel dismisses. Full key set (Shift, T9, Cyrillic/Greek) in the [UI framework guide](../../developer/ui-framework.md).
 
 The keyboard supports placeholders that insert live data at send time:
 

docs/solo_features/settings_screen/settings_screen.md

@@ -73,7 +73,7 @@ Lists all available home screen pages. For each entry:
 | CR        | 5–8        | LEFT/RIGHT. Coding rate (4/5–4/8). |
 | Auto pwr  | ON / OFF   | **Adaptive Power Control.** Lowers TX power on strong links, ramps back to the **TX Pwr** ceiling on weak/lost ones. Link quality from DM ACK SNR, or — for channels (no ACK) — a repeater's rebroadcast. Live power shown on the radio page/name bar. Default OFF. **Suppressed (`--`) while the repeater is on** — restored once it's switched off. |
 
-There is no "Pwr save" row: hardware RX duty-cycle receive was tried and disabled (`FEAT_RX_POWERSAVE 0` in `examples/companion_radio/Features.h`) — the SX126x's duty-cycle preamble detection needs the sender's actual preamble to exactly match what we configure, which a mixed-firmware mesh can't guarantee (silently drops every packet from a mismatched sender, no matter the signal strength). See `docs/development/roadmap.md` for the full writeup.
+There is no "Pwr save" row: hardware RX duty-cycle receive was tried and disabled (`FEAT_RX_POWERSAVE 0` in `examples/companion_radio/Features.h`) — the SX126x's duty-cycle preamble detection needs the sender's actual preamble to exactly match what we configure, which a mixed-firmware mesh can't guarantee (silently drops every packet from a mismatched sender, no matter the signal strength).
 | Scope     | list       | Shows the list's **default** scope. **Enter** opens the **SCOPE** list: `*` (wildcard = unscoped, always first, can't be renamed or deleted) plus up to 8 named scopes of your own (e.g. `pl`). Typing a name derives a shared key the same way on every device, so any device that types the same name lands on the same scope automatically, no key exchange needed. **Enter** on a row opens **Set as default** / **Rename** / **Delete** (delete confirms first); **+ Add scope** at the bottom opens the keyboard. The **default** scope (marked `[default]`) governs **DMs** and the **repeater's own relay slot**; each **channel** carries its own pick — set from the channel's context menu (see [Message Screen](../message_screen/message_screen.md)) — and a channel left on `*` sends unscoped. Scopes tag flood traffic so repeaters can tell your community's messages apart from others sharing the same frequency; paired with **Tools › Repeater › Scope only** it's also what this device relays for in repeater mode. The default also syncs both ways with the phone app's default-scope setting. Not encryption — message content is unaffected either way. Upgrading from a build with the old single Scope field carries it over as the default entry and seeds every existing channel with it, so nothing changes on the air. |
 
 |           OLED            |           E-Ink           |

docs/solo_features/tools_screen/tools_screen.md

@@ -501,7 +501,7 @@ A circular tab carousel of live device and mesh stats, refreshed once a second (
 
 The packet counters, **Forwarded** and **Errors**, are cumulative since boot. On the **Live** tab, **Hold Enter** opens a *Reset counters?* confirm (defaults to Cancel); the live readings (noise, RSSI/SNR, pool, queue, uptime) are not affected. **Cancel/Back** returns to the Tools list.
 
-There is no "RXPS wd s/h" row: it belongs to hardware RX duty-cycle receive, which is currently disabled (see the Settings screen doc and `docs/development/roadmap.md`) — nothing to watchdog.
+There is no "RXPS wd s/h" row: it belongs to hardware RX duty-cycle receive, which is currently disabled (see the Settings screen doc) — nothing to watchdog.
 
 The counters make the repeater behaviour observable: **Forwarded** confirms the node is actually relaying (not just configured to), and **Pool free** / **Queue** show whether forwarding is exhausting the packet pool. See **Tools › Repeater** for the relaying options.