feat: enhance OpenCode support with context metrics and improve documentation

README.md

@@ -20,6 +20,9 @@ All read-only. No API keys. No auth.
 
 ### macOS / Linux
 
+> [!IMPORTANT]
+> On Linux, ensure `sqlite3` is installed to enable monitoring for OpenCode sessions.
+
 ```bash
 curl --proto '=https' --tlsv1.2 -LsSf https://github.com/graykode/abtop/releases/latest/download/abtop-installer.sh | sh
 ```

src/collector/claude.rs

@@ -572,7 +572,7 @@ impl ClaudeCollector {
         };
 
         let configured_model = read_configured_model(&sf.cwd);
-        let context_window = context_window_for_model(&model, &configured_model, max_context_tokens);
+        let context_window = crate::collector::context_window_for_model(&model, &configured_model, max_context_tokens);
         let context_percent = if context_window > 0 {
             (last_context_tokens as f64 / context_window as f64) * 100.0
         } else {
@@ -1885,14 +1885,6 @@ fn truncate(s: &str, max: usize) -> String {
     }
 }
 
-fn context_window_for_model(transcript_model: &str, configured_model: &str, max_context_tokens: u64) -> u64 {
-    if transcript_model.contains("[1m]") || configured_model.contains("[1m]") || max_context_tokens > 200_000 {
-        1_000_000
-    } else {
-        200_000
-    }
-}
-
 /// Returns the ordered list of Claude Code settings files to check, from
 /// highest to lowest priority, matching Claude Code's own resolution order:
 /// 1. `{cwd}/.claude/settings.local.json`
@@ -3087,27 +3079,27 @@ n/Users/bob/.claude-alt/projects/-Users-bob-project/session.jsonl
     }
 
     #[test]
-    fn test_context_window_for_model() {
+    fn test_crate::collector::context_window_for_model() {
         // Base model with low token usage → 200K
-        assert_eq!(context_window_for_model("claude-opus-4-6", "", 50_000), 200_000);
+        assert_eq!(crate::collector::context_window_for_model("claude-opus-4-6", "", 50_000), 200_000);
         // Explicit [1m] suffix in transcript model → 1M regardless of token count
         assert_eq!(
-            context_window_for_model("claude-opus-4-6[1m]", "", 0),
+            crate::collector::context_window_for_model("claude-opus-4-6[1m]", "", 0),
             1_000_000
         );
         // [1m] in configured model (from settings.json) → 1M even if transcript lacks it
         assert_eq!(
-            context_window_for_model("claude-sonnet-4-6", "sonnet[1m]", 0),
+            crate::collector::context_window_for_model("claude-sonnet-4-6", "sonnet[1m]", 0),
             1_000_000
         );
         assert_eq!(
-            context_window_for_model("claude-sonnet-4-6", "", 100_000),
+            crate::collector::context_window_for_model("claude-sonnet-4-6", "", 100_000),
             200_000
         );
-        assert_eq!(context_window_for_model("unknown-model", "", 0), 200_000);
+        assert_eq!(crate::collector::context_window_for_model("unknown-model", "", 0), 200_000);
         // Token usage exceeds 200K → must be 1M window
         assert_eq!(
-            context_window_for_model("claude-opus-4-6", "", 250_000),
+            crate::collector::context_window_for_model("claude-opus-4-6", "", 250_000),
             1_000_000
         );
     }

src/collector/mod.rs

@@ -112,30 +112,13 @@ pub trait AgentCollector {
 
 /// Process data fetched once per tick and shared across all collectors.
 /// Avoids duplicate ps/lsof calls.
-pub struct SharedProcessData {
-    pub process_info: HashMap<u32, process::ProcInfo>,
-    pub children_map: HashMap<u32, Vec<u32>>,
-    pub ports: HashMap<u32, Vec<u16>>,
-    /// True on slow poll ticks (every 5 ticks ≈ 10s). Collectors should
-    /// defer expensive discovery (e.g. /proc reads) to slow ticks.
-    pub slow_tick: bool,
-    /// PIDs of detected codex mcp-server processes. Populated by
-    /// `MultiCollector` after McpDetection runs; CodexCollector
-    /// excludes these so a single mcp-server PID isn't double-counted
-    /// in the sessions panel.
-    pub mcp_server_pids: HashSet<u32>,
-    /// Rollout file paths held open by an mcp-server process. The
-    /// CodexCollector "recently finished" pass skips these to avoid
-    /// PID=0 ghost rows for threads that the mcp-server is still
-    /// holding fds for.
-    pub mcp_owned_rollouts: HashSet<PathBuf>,
-    /// When false, the suppression sets above are empty so the
-    /// sessions panel restores upstream behavior. Driven by the user
-    /// toggle (Shift+M).
-    pub mcp_suppress: bool,
-    /// Cached Desktop app-server PID -> open rollout files. This is populated
-    /// by a background scanner so slow macOS lsof calls cannot block the TUI.
-    pub desktop_rollout_fd_map: HashMap<u32, Vec<PathBuf>>,
+/// Context window size for this model (e.g. 200K, 1M).
+pub(crate) fn context_window_for_model(transcript_model: &str, configured_model: &str, max_context_tokens: u64) -> u64 {
+    if transcript_model.contains("[1m]") || configured_model.contains("[1m]") || max_context_tokens > 200_000 {
+        1_000_000
+    } else {
+        200_000
+    }
 }
 
 impl SharedProcessData {

src/collector/opencode.rs

@@ -1,4 +1,4 @@
-use super::process;
+use super::{process, context_window_for_model};
 use crate::model::{AgentSession, ChildProcess, SessionStatus};
 use serde_json::Value;
 use std::collections::{HashMap, HashSet};
@@ -158,6 +158,13 @@ impl OpenCodeCollector {
                 "-".to_string()
             };
 
+            let context_window = context_window_for_model(&model, "", 0);
+            let context_percent = if context_window > 0 {
+                ((ds.total_input + ds.total_output) as f64 / context_window as f64) * 100.0
+            } else {
+                0.0
+            };
+
             sessions.push(AgentSession {
                 agent_cli: "opencode",
                 pid: matched_pid,
@@ -168,7 +175,7 @@ impl OpenCodeCollector {
                 status,
                 model,
                 effort: String::new(),
-                context_percent: 0.0,
+                context_percent,
                 total_input_tokens: ds.total_input,
                 total_output_tokens: ds.total_output,
                 total_cache_read: ds.total_cache_read,
@@ -183,7 +190,7 @@ impl OpenCodeCollector {
                 token_history: vec![],
                 context_history: vec![],
                 compaction_count: 0,
-                context_window: 0,
+                context_window,
                 subagents: vec![],
                 mem_file_count: 0,
                 mem_line_count: 0,