Drop VIEWPORT_STATE_UNCONFIGURED — state is just awake/asleep

\`state\` now reports only the screen's runtime state (awake or asleep).
Whether a viewport is set up to talk to Scrypted is a separate
\`configured\` flag, derived from \`viewport_name && scrypted_url\`.
There's no third state.

Behaviour changes:
- POST /state always succeeds; the previous 409 "device unconfigured"
  path is gone. The screen toggles regardless of /config status.
- POST /config now sets \`configured\` directly from the derived
  predicate instead of mutating the state enum.
- Outbound state-client POST to Scrypted is still gated on a scrypted
  URL being present — that's the only thing the configured flag now
  actually controls in the runtime path.

GET /state JSON unchanged in shape, but \`state\` is now never
"unconfigured" — that's reported through the existing \`configured\`
boolean instead.

1 files changed, 2 insertions, 3 deletions

diff --git a/main/state_machine.h b/main/state_machine.h
index 8caf670..22aebad 100644
--- a/main/state_machine.h
+++ b/main/state_machine.h
@@ -6,7 +6,6 @@
 esp_err_t state_machine_init(void);
 
 // Transition to AWAKE or ASLEEP. Idempotent: no-op if already there.
-// Returns ESP_ERR_INVALID_STATE if the device is unconfigured.
 // Side-effects (under one critical section):
 //   AWAKE  -> backlight on, idle timer (re)armed
 //   ASLEEP -> backlight off, idle timer cancelled, framebuffer discarded
@@ -14,8 +13,8 @@ esp_err_t state_machine_set(viewport_run_state_t target);
 
 // Device-initiated variant (tap, idle timer expiry). Drives the same
 // transition as state_machine_set() and additionally enqueues a
-// {viewport,state} POST to <scrypted>/state via state_client.
-// Silently no-ops if the device is unconfigured.
+// {viewport,state} POST to <scrypted>/state via state_client when a
+// `scrypted` URL is configured.
 void state_machine_set_local(viewport_run_state_t target);
 
 // Called by /frame after a successful paint. Restarts the idle timer