feat(vom): update vom algorithm, fix overlay problem with background state machine

crates/bsk-cli/src/cli/mod.rs

@@ -19,6 +19,7 @@ pub mod interaction;
 pub mod logs;
 pub mod navigate;
 pub mod network;
+pub mod observe;
 pub mod record;
 pub mod record_state;
 pub mod render_error;
@@ -41,6 +42,7 @@ use crate::cli::install_skill::InstallSkillArgs;
 use crate::cli::interaction::{ClickArgs, FillArgs, PressArgs, SelectArgs};
 use crate::cli::navigate::{NavigateCommand, NavigateHistoryArgs, ReloadArgs};
 use crate::cli::network::NetworkArgs;
+use crate::cli::observe::ObserveArgs;
 use crate::cli::record::RecordCmd;
 use crate::cli::screenshot::ScreenshotArgs;
 use crate::cli::session::SessionCmd;
@@ -122,6 +124,9 @@ pub enum Command {
     /// Produce an indented aria-snapshot with @eN refs.
     Snapshot(SnapshotArgs),
 
+    /// Produce a semantic VOM observation with perception probes.
+    Observe(ObserveArgs),
+
     /// Read buffered console/log/exception messages.
     Console(ConsoleArgs),
 

crates/bsk-cli/src/cli/observe.rs

@@ -0,0 +1,79 @@
+//! `bsk observe` — semantic VOM observation with bounded perception probes.
+
+use std::path::PathBuf;
+
+use anyhow::Context;
+use bsk_protocol::Method;
+use bsk_protocol::tools::{ObserveParams, ObserveResult};
+use clap::Args;
+
+use crate::cli::TOOL_IPC_TIMEOUT;
+use crate::cli::dialogs::print_dialog_summaries;
+use crate::cli::ensure_daemon::ensure_daemon;
+use crate::cli::error::{CliError, Format};
+
+#[derive(Debug, Clone, Args)]
+pub struct ObserveArgs {
+    /// Session id (must be active).
+    #[arg(long)]
+    pub session: String,
+
+    /// Target tab. Defaults to the Agent Window's active tab.
+    #[arg(long = "tab-id")]
+    pub tab_id: Option<i64>,
+
+    /// Cap on VOM tree depth before truncating.
+    #[arg(long = "max-depth")]
+    pub max_depth: Option<u32>,
+
+    /// Soft cap on rendered tokens (~4 chars/token).
+    #[arg(long = "max-tokens")]
+    pub max_tokens: Option<u32>,
+}
+
+pub fn dispatch(args: ObserveArgs, format: Format) -> Result<(), CliError> {
+    let info = ensure_daemon().context("ensure daemon is running")?;
+    run(info.sock_path, args, format)
+}
+
+fn run(sock: PathBuf, args: ObserveArgs, format: Format) -> Result<(), CliError> {
+    let params = ObserveParams {
+        session_id: args.session.clone(),
+        tab_id: args.tab_id,
+        max_depth: args.max_depth,
+        max_tokens: args.max_tokens,
+    };
+    let reply: ObserveResult = call(sock, params)?;
+    match format {
+        Format::Json => {
+            let json = serde_json::to_string_pretty(&reply)
+                .map_err(|e| CliError::Local(anyhow::anyhow!(e)))?;
+            println!("{json}");
+        }
+        Format::Human => {
+            if reply.text.is_empty() {
+                println!("(empty observation — page may still be loading)");
+            } else {
+                println!("{}", reply.text);
+            }
+            if reply.truncated {
+                eprintln!(
+                    "warning: observation truncated (refs={}, tab={}). Increase --max-depth / --max-tokens if needed.",
+                    reply.ref_count, reply.tab_id
+                );
+            }
+            print_dialog_summaries(&reply.dialogs);
+        }
+    }
+    Ok(())
+}
+
+fn call(sock: PathBuf, params: ObserveParams) -> Result<ObserveResult, CliError> {
+    crate::cli::business_rpc::call::<ObserveParams, ObserveResult>(
+        sock,
+        "observe",
+        Method::ToolObserve,
+        Some(params),
+        TOOL_IPC_TIMEOUT,
+    )
+}