Phase 2: web front end

axum served from inside the daemon so it reads SQLite and the event bus
directly: browse feeds, read show notes, play with seeking, download and
delete files, mark read/flag, and edit feed settings.

Config is now hot-reloadable (Ctx.cfg behind RwLock<Arc<Config>>), so UI
edits apply without a daemon restart. Access is a shared token minted from
/dev/urandom, carried in a cookie because an <audio> element cannot send
headers. Show notes are untrusted feed HTML and are sanitized with ammonia
server-side.

read/flagged finally have a writer, which retention has needed since it
started ordering by them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RPyeapneuXrCdojsaiXGbe

src/config.rs

@@ -5,18 +5,20 @@ use serde::{Deserialize, Serialize};
 use std::collections::BTreeMap;
 use std::path::{Path, PathBuf};
 
-#[derive(Debug, Default, Deserialize, Serialize)]
+#[derive(Debug, Default, Clone, Deserialize, Serialize)]
 pub struct Config {
     #[serde(default)]
     pub general: General,
     #[serde(default)]
     pub torrent: Torrent,
+    #[serde(default)]
+    pub web: Web,
     /// Keyed by feed id: the TOML table name, which replaces the old genHash(feedURL).
     #[serde(default)]
     pub feeds: BTreeMap<String, Feed>,
 }
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Clone, Deserialize, Serialize)]
 #[serde(default)]
 pub struct General {
     pub download_dir: PathBuf,
@@ -39,7 +41,7 @@ pub enum Organize {
     Date,
 }
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Clone, Deserialize, Serialize)]
 #[serde(default)]
 pub struct Torrent {
     pub enabled: bool,
@@ -51,6 +53,32 @@ pub struct Torrent {
     pub stall_mins: u64,
 }
 
+#[derive(Debug, Clone, Deserialize, Serialize)]
+#[serde(default)]
+pub struct Web {
+    pub enabled: bool,
+    /// Use 0.0.0.0 to reach it from the LAN. Anything but loopback needs the token.
+    pub bind: String,
+    /// Shared secret. Generated and written back on first run when left empty.
+    pub token: String,
+}
+
+impl Default for Web {
+    fn default() -> Self {
+        Self {
+            enabled: false,
+            bind: "127.0.0.1:8080".into(),
+            token: String::new(),
+        }
+    }
+}
+
+impl Web {
+    pub fn binds_publicly(&self) -> bool {
+        !self.bind.starts_with("127.") && !self.bind.starts_with("localhost")
+    }
+}
+
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct Feed {
     pub url: String,