fix(ambient): default allow_bot_messages to true

crates/openab-core/src/config.rs

@@ -1324,16 +1324,25 @@ impl Default for AmbientPoolConfig {
 }
 
 /// `[ambient.discord]` — Discord-specific ambient settings.
-#[derive(Debug, Clone, Default, Deserialize)]
+#[derive(Debug, Clone, Deserialize)]
 pub struct AmbientDiscordConfig {
     /// Explicit channel allowlist. Required — empty means ambient is disabled.
     #[serde(default)]
     pub channels: Vec<String>,
-    /// Whether other bots' messages enter the ambient buffer. Default: false.
-    #[serde(default)]
+    /// Whether other bots' messages enter the ambient buffer. Default: true.
+    #[serde(default = "default_true")]
     pub allow_bot_messages: bool,
 }
 
+impl Default for AmbientDiscordConfig {
+    fn default() -> Self {
+        Self {
+            channels: Vec::new(),
+            allow_bot_messages: true,
+        }
+    }
+}
+
 fn default_flush_interval_seconds() -> u64 {
     60
 }

docs/ambient.md

@@ -26,7 +26,7 @@ debug = false                     # ⚠️ Only enable in test channels (exposes
 
 [ambient.discord]
 channels = ["1234567890"]         # Channel IDs to monitor (and their threads)
-allow_bot_messages = false        # Include other bots' messages in buffer
+allow_bot_messages = true         # Include other bots' messages in buffer (default)
 ```
 
 ### Custom Instructions
@@ -61,7 +61,7 @@ You are passively observing a Discord channel.
 | `flush_timeout_seconds` | `120` | Safety timeout — resets flushing state if exceeded. Clamped to [5, 600]. |
 | `instructions_file` | `~/.openab/config/ambient.md` | Path to custom instructions file. First 2000 chars used as system prompt. Falls back to built-in default if missing. |
 | `channels` | `[]` | Explicit channel allowlist (required). Empty = ambient disabled. |
-| `allow_bot_messages` | `false` | Whether other bots' messages enter the ambient buffer. |
+| `allow_bot_messages` | `true` | Whether other bots' messages enter the ambient buffer. |
 
 > **Threads are observed by default.** Messages in **threads** whose parent is a configured channel are buffered too (most OpenAB conversation happens in auto-created threads, not the parent channel). **Both** bot-owned and non-owned threads are observed — the bot passively follows all thread conversation under an ambient channel. An @mention in any thread discards its buffer and triggers immediate dispatch, so there is no double-reply. Each thread batches independently (keyed by the thread ID).
 

docs/config-reference.md

@@ -484,7 +484,7 @@ context_flushes = 3
 
 [ambient.discord]
 channels = []                     # Channel ID allowlist — and their threads (required)
-allow_bot_messages = false
+allow_bot_messages = true
 ```
 
 ---