feat: remove pipeline command and refactor workflow execution to use custom specialists

src/app/state/misc.rs

@@ -90,10 +90,6 @@ const COMMANDS: &[&str] = &[
     "/model add",
     "/workflow",
     "/workflow run",
-    "/pipeline",
-    "/pipeline full",
-    "/pipeline quick",
-    "/pipeline skip",
     "/compact",
 ];
 
@@ -293,14 +289,6 @@ pub struct MiscState {
     pub api_context_length: Option<u32>,
     pub tick_count: u64,
     pub todo_content: String,
-    /// Pipeline mode override set by `/pipeline` command.
-    ///  - `None`: auto-detect (default)
-    ///  - `Some("full")`: force full pipeline
-    ///  - `Some("quick")`: force quick pipeline
-    ///  - `Some("skip")`: skip pipeline, handle directly
-    ///
-    /// Consumed on the next agent turn.
-    pub pipeline_override: Option<String>,
 }
 
 impl MiscState {
@@ -319,7 +307,6 @@ impl MiscState {
             api_context_length: None,
             tick_count: 0,
             todo_content: String::new(),
-            pipeline_override: None,
         }
     }