server.py and desktop_viewer.py read-only mode required the desktop
config JSONs to exist and crashed/showed "Config-Datei fehlt" if one
was deleted, even though the board already holds the config durably
in NVM. Add versapad_combined.fetch_from_board()/load_or_fetch(): a
missing combined JSON is now transparently rebuilt from the board via
serial and cached back to disk, falling back to the legacy per-profile
JSONs (or a clear error) only when the board is unreachable.
_on_toggle_editing() seeded self.combined from default_combined() on first
activation, which reads the stale per-profile JSONs for all 3 profiles
instead of the current versapad_config_all.json. Writing to board while
only editing one profile silently reverted the other two. Now prefers
loading the current combined file, falling back to defaults only if it
doesn't exist.
Also documents the READ_STATUS polling change and the jappel PR workflow
constraint in AGENTS.md.
Ursache: Programmiermodus arbeitet auf der kombinierten Datei
(versapad_config_all.json), der Nur-Lese-Modus las aber immer nur die
alten Einzel-JSONs (versapad_config{1,2,3}.json) -- zwei komplett
getrennte Datenquellen. Jetzt: jede Aenderung im Programmiermodus wird
sofort in die kombinierte Datei geschrieben, und der Nur-Lese-Modus
bevorzugt diese Datei, wenn sie existiert.
Info dialog no longer assumes Claude Code's own CLI setup command --
other users may register the MCP server with a different assistant.
Live-Sync status just says "verbunden" instead of repeating the
profile name (already visible via the active tab).
Minimizing or closing hides the window instead of leaving a taskbar
entry; only "Beenden" in the tray right-click menu really exits. Tray
callbacks route through a queue instead of touching Tk directly from
pystray's thread (same pattern as the earlier serial-thread fix).
Also fixes the build script: PyInstaller failed on the network share
while copying Tcl/Tk tzdata (path-length issue), so building now
happens in a local temp copy instead of directly on Z:.
Adds an info button that explains the MCP server's available tools.
