Remove flock mode (superseded by studio)

Flock mode has been superseded by the studio multi-agent workspace manager.

Changes:
- Remove g3-ensembles crate entirely
- Remove --project, --flock-workspace, --segments, --flock-max-turns CLI flags
- Remove run_flock_mode() from autonomous.rs
- Remove flock-related tests from cli_integration_test.rs
- Update README.md, docs/architecture.md, analysis/memory.md
- Delete docs/FLOCK_MODE.md

crates/g3-cli/Cargo.toml

@@ -11,7 +11,6 @@ g3-planner = { path = "../g3-planner" }
 g3-computer-control = { path = "../g3-computer-control" }
 g3-providers = { path = "../g3-providers" }
 clap = { workspace = true }
-g3-ensembles = { path = "../g3-ensembles" }
 tokio = { workspace = true }
 anyhow = { workspace = true }
 tracing = { workspace = true }

crates/g3-cli/src/autonomous.rs

@@ -1,4 +1,4 @@
-//! Autonomous mode for G3 CLI - coach-player feedback loop and flock mode.
+//! Autonomous mode for G3 CLI - coach-player feedback loop.
 
 use anyhow::Result;
 use sha2::{Digest, Sha256};
@@ -694,37 +694,6 @@ fn print_panic_report(
     output.print(&"=".repeat(60));
 }
 
-/// Run flock mode - parallel multi-agent development
-pub async fn run_flock_mode(
-    project_dir: PathBuf,
-    flock_workspace: PathBuf,
-    num_segments: usize,
-    max_turns: usize,
-) -> Result<()> {
-    let output = SimpleOutput::new();
-
-    output.print("");
-    output.print("🦅 G3 FLOCK MODE - Parallel Multi-Agent Development");
-    output.print("");
-    output.print(&format!("📁 Project: {}", project_dir.display()));
-    output.print(&format!("🗂️  Workspace: {}", flock_workspace.display()));
-    output.print(&format!("🔢 Segments: {}", num_segments));
-    output.print(&format!("🔄 Max Turns per Segment: {}", max_turns));
-    output.print("");
-
-    let config = g3_ensembles::FlockConfig::new(project_dir, flock_workspace, num_segments)?
-        .with_max_turns(max_turns);
-
-    let mut flock = g3_ensembles::FlockMode::new(config)?;
-
-    match flock.run().await {
-        Ok(_) => output.print("\n✅ Flock mode completed successfully"),
-        Err(e) => output.print(&format!("\n❌ Flock mode failed: {}", e)),
-    }
-
-    Ok(())
-}
-
 fn print_final_report(
     output: &SimpleOutput,
     agent: &Agent<ConsoleUiWriter>,

crates/g3-cli/src/cli_args.rs

@@ -79,22 +79,6 @@ pub struct Cli {
     #[arg(long)]
     pub safari: bool,
 
-    /// Enable flock mode - parallel multi-agent development
-    #[arg(long, requires = "flock_workspace", requires = "segments")]
-    pub project: Option<PathBuf>,
-
-    /// Flock workspace directory (where segment copies will be created)
-    #[arg(long, requires = "project")]
-    pub flock_workspace: Option<PathBuf>,
-
-    /// Number of segments to partition work into (for flock mode)
-    #[arg(long, requires = "project")]
-    pub segments: Option<usize>,
-
-    /// Maximum turns per segment in flock mode (default: 5)
-    #[arg(long, default_value = "5")]
-    pub flock_max_turns: usize,
-
     /// Enable planning mode for requirements-driven development
     #[arg(long, conflicts_with_all = ["autonomous", "auto", "chat"])]
     pub planning: bool,

crates/g3-cli/src/lib.rs

@@ -29,7 +29,7 @@ use clap::Parser;
 
 use accumulative::run_accumulative_mode;
 use agent_mode::run_agent_mode;
-use autonomous::{run_autonomous, run_flock_mode};
+use autonomous::run_autonomous;
 use interactive::run_interactive;
 use project_files::{combine_project_content, read_agents_config, read_project_memory, read_project_readme};
 use simple_output::SimpleOutput;
@@ -39,19 +39,6 @@ use utils::{initialize_logging, load_config_with_cli_overrides, setup_workspace_
 pub async fn run() -> Result<()> {
     let cli = Cli::parse();
 
-    // Check if flock mode is enabled
-    if let (Some(project_dir), Some(flock_workspace), Some(num_segments)) =
-        (&cli.project, &cli.flock_workspace, cli.segments)
-    {
-        return run_flock_mode(
-            project_dir.clone(),
-            flock_workspace.clone(),
-            num_segments,
-            cli.flock_max_turns,
-        )
-        .await;
-    }
-
     if cli.codebase_fast_start.is_some() {
         print!("codebase_fast_start is temporarily disabled.");
         std::process::exit(1);

crates/g3-cli/tests/cli_integration_test.rs

@@ -173,38 +173,6 @@ fn test_planning_conflicts_with_autonomous() {
     );
 }
 
-// =============================================================================
-// Test: Flock mode requires all related flags
-// =============================================================================
-
-#[test]
-fn test_flock_mode_requires_workspace() {
-    let output = Command::new(get_g3_binary())
-        .args(["--project", "/tmp/test"])
-        .output()
-        .expect("Failed to execute g3 with incomplete flock args");
-
-    // Should fail because --flock-workspace and --segments are required
-    assert!(
-        !output.status.success(),
-        "--project without --flock-workspace should fail"
-    );
-}
-
-#[test]
-fn test_flock_mode_requires_segments() {
-    let output = Command::new(get_g3_binary())
-        .args(["--project", "/tmp/test", "--flock-workspace", "/tmp/ws"])
-        .output()
-        .expect("Failed to execute g3 with incomplete flock args");
-
-    // Should fail because --segments is required
-    assert!(
-        !output.status.success(),
-        "--project without --segments should fail"
-    );
-}
-
 // =============================================================================
 // Test: Workspace directory option is accepted
 // =============================================================================