lean_ctx/tools/
mod.rs

1use std::path::Path;
2use std::sync::atomic::{AtomicUsize, Ordering};
3use std::sync::Arc;
4use std::time::Instant;
5use tokio::sync::RwLock;
6
7use crate::core::cache::SessionCache;
8use crate::core::session::SessionState;
9
10pub mod autonomy;
11pub mod ctx_agent;
12pub mod ctx_analyze;
13pub mod ctx_architecture;
14pub mod ctx_artifacts;
15pub mod ctx_benchmark;
16pub mod ctx_callees;
17pub mod ctx_callers;
18pub mod ctx_callgraph;
19pub mod ctx_compile;
20pub mod ctx_compress;
21pub mod ctx_compress_memory;
22pub mod ctx_context;
23pub mod ctx_control;
24pub mod ctx_cost;
25pub mod ctx_dedup;
26pub mod ctx_delta;
27pub mod ctx_discover;
28pub mod ctx_edit;
29pub mod ctx_execute;
30pub mod ctx_expand;
31pub mod ctx_feedback;
32pub mod ctx_fill;
33pub mod ctx_gain;
34pub mod ctx_graph;
35pub mod ctx_graph_diagram;
36pub mod ctx_handoff;
37pub mod ctx_heatmap;
38pub mod ctx_impact;
39pub mod ctx_index;
40pub mod ctx_intent;
41pub mod ctx_knowledge;
42pub mod ctx_knowledge_relations;
43pub mod ctx_metrics;
44pub mod ctx_multi_read;
45pub mod ctx_outline;
46pub mod ctx_overview;
47pub mod ctx_pack;
48pub mod ctx_plan;
49pub mod ctx_prefetch;
50pub mod ctx_preload;
51pub mod ctx_proof;
52pub mod ctx_provider;
53pub mod ctx_read;
54pub mod ctx_response;
55pub mod ctx_review;
56pub mod ctx_routes;
57pub mod ctx_search;
58pub mod ctx_semantic_search;
59pub mod ctx_session;
60pub mod ctx_share;
61pub mod ctx_shell;
62pub mod ctx_smart_read;
63pub mod ctx_symbol;
64pub mod ctx_task;
65pub mod ctx_tree;
66pub mod ctx_verify;
67pub mod ctx_workflow;
68pub mod ctx_wrapped;
69pub(crate) mod knowledge_shared;
70pub mod registered;
71
72const DEFAULT_CACHE_TTL_SECS: u64 = 300;
73
74struct CepComputedStats {
75    cep_score: u32,
76    cache_util: u32,
77    mode_diversity: u32,
78    compression_rate: u32,
79    total_original: u64,
80    total_compressed: u64,
81    total_saved: u64,
82    mode_counts: std::collections::HashMap<String, u64>,
83    complexity: String,
84    cache_hits: u64,
85    total_reads: u64,
86    tool_call_count: u64,
87}
88
89/// Context Reduction Protocol mode controlling output verbosity.
90#[derive(Clone, Copy, Debug, PartialEq, Eq)]
91pub enum CrpMode {
92    Off,
93    Compact,
94    Tdd,
95}
96
97impl CrpMode {
98    /// Reads the CRP mode from the `LEAN_CTX_CRP_MODE` environment variable.
99    pub fn from_env() -> Self {
100        match std::env::var("LEAN_CTX_CRP_MODE")
101            .unwrap_or_default()
102            .to_lowercase()
103            .as_str()
104        {
105            "off" => Self::Off,
106            "compact" => Self::Compact,
107            _ => Self::Tdd,
108        }
109    }
110
111    pub fn parse(s: &str) -> Option<Self> {
112        match s.trim().to_lowercase().as_str() {
113            "off" => Some(Self::Off),
114            "compact" => Some(Self::Compact),
115            "tdd" => Some(Self::Tdd),
116            _ => None,
117        }
118    }
119
120    /// Effective CRP mode: explicit env var wins; otherwise use active profile.
121    pub fn effective() -> Self {
122        if let Ok(v) = std::env::var("LEAN_CTX_CRP_MODE") {
123            if !v.trim().is_empty() {
124                return Self::parse(&v).unwrap_or(Self::Tdd);
125            }
126        }
127        let p = crate::core::profiles::active_profile();
128        Self::parse(p.compression.crp_mode_effective()).unwrap_or(Self::Tdd)
129    }
130
131    /// Returns true if the mode is TDD (maximum compression).
132    pub fn is_tdd(&self) -> bool {
133        *self == Self::Tdd
134    }
135}
136
137/// Thread-safe handle to the shared file content cache.
138pub type SharedCache = Arc<RwLock<SessionCache>>;
139
140#[derive(Clone, Copy, Debug, PartialEq, Eq)]
141pub enum SessionMode {
142    /// Traditional single-client session persistence under `~/.lean-ctx/sessions/`.
143    Personal,
144    /// Context OS mode: shared sessions + event bus for multi-client HTTP/team-server.
145    Shared,
146}
147
148/// Central MCP server state: cache, session, metrics, and autonomy runtime.
149#[derive(Clone)]
150pub struct LeanCtxServer {
151    pub cache: SharedCache,
152    pub session: Arc<RwLock<SessionState>>,
153    pub tool_calls: Arc<RwLock<Vec<ToolCallRecord>>>,
154    pub call_count: Arc<AtomicUsize>,
155    pub cache_ttl_secs: u64,
156    pub last_call: Arc<RwLock<Instant>>,
157    pub agent_id: Arc<RwLock<Option<String>>>,
158    pub client_name: Arc<RwLock<String>>,
159    pub autonomy: Arc<autonomy::AutonomyState>,
160    pub loop_detector: Arc<RwLock<crate::core::loop_detection::LoopDetector>>,
161    pub workflow: Arc<RwLock<Option<crate::core::workflow::WorkflowRun>>>,
162    pub ledger: Arc<RwLock<crate::core::context_ledger::ContextLedger>>,
163    pub pipeline_stats: Arc<RwLock<crate::core::pipeline::PipelineStats>>,
164    pub session_mode: SessionMode,
165    pub workspace_id: String,
166    pub channel_id: String,
167    pub context_os: Option<Arc<crate::core::context_os::ContextOsRuntime>>,
168    pub context_ir: Option<Arc<RwLock<crate::core::context_ir::ContextIrV1>>>,
169    pub registry: Option<Arc<crate::server::registry::ToolRegistry>>,
170    pub(crate) rules_stale_checked: Arc<std::sync::atomic::AtomicBool>,
171    pub(crate) last_seen_event_id: Arc<std::sync::atomic::AtomicI64>,
172    startup_project_root: Option<String>,
173    startup_shell_cwd: Option<String>,
174}
175
176/// Recorded metrics for a single MCP tool invocation.
177#[derive(Clone, Debug)]
178pub struct ToolCallRecord {
179    pub tool: String,
180    pub original_tokens: usize,
181    pub saved_tokens: usize,
182    pub mode: Option<String>,
183    pub duration_ms: u64,
184    pub timestamp: String,
185}
186
187impl Default for LeanCtxServer {
188    fn default() -> Self {
189        Self::new()
190    }
191}
192
193impl LeanCtxServer {
194    /// Creates a new server with default settings, auto-detecting the project root.
195    pub fn new() -> Self {
196        Self::new_with_project_root(None)
197    }
198
199    /// Creates a new server rooted at the given project directory.
200    pub fn new_with_project_root(project_root: Option<&str>) -> Self {
201        Self::new_with_startup(
202            project_root,
203            std::env::current_dir().ok().as_deref(),
204            SessionMode::Personal,
205            "default",
206            "default",
207        )
208    }
209
210    /// Creates a new server in Context OS shared mode for a specific workspace/channel.
211    pub fn new_shared_with_context(
212        project_root: &str,
213        workspace_id: &str,
214        channel_id: &str,
215    ) -> Self {
216        Self::new_with_startup(
217            Some(project_root),
218            std::env::current_dir().ok().as_deref(),
219            SessionMode::Shared,
220            workspace_id,
221            channel_id,
222        )
223    }
224
225    fn new_with_startup(
226        project_root: Option<&str>,
227        startup_cwd: Option<&Path>,
228        session_mode: SessionMode,
229        workspace_id: &str,
230        channel_id: &str,
231    ) -> Self {
232        let ttl = std::env::var("LEAN_CTX_CACHE_TTL")
233            .ok()
234            .and_then(|v| v.parse().ok())
235            .unwrap_or(DEFAULT_CACHE_TTL_SECS);
236
237        let startup = detect_startup_context(project_root, startup_cwd);
238        let (session, context_os) = match session_mode {
239            SessionMode::Personal => {
240                let mut session = if let Some(ref root) = startup.project_root {
241                    SessionState::load_latest_for_project_root(root).unwrap_or_default()
242                } else {
243                    SessionState::load_latest().unwrap_or_default()
244                };
245                if let Some(ref root) = startup.project_root {
246                    session.project_root = Some(root.clone());
247                }
248                if let Some(ref cwd) = startup.shell_cwd {
249                    session.shell_cwd = Some(cwd.clone());
250                }
251                (Arc::new(RwLock::new(session)), None)
252            }
253            SessionMode::Shared => {
254                let Some(ref root) = startup.project_root else {
255                    // Shared mode without a project root is not useful; fall back to personal.
256                    return Self::new_with_startup(
257                        project_root,
258                        startup_cwd,
259                        SessionMode::Personal,
260                        workspace_id,
261                        channel_id,
262                    );
263                };
264                let rt = crate::core::context_os::runtime();
265                let session = rt
266                    .shared_sessions
267                    .get_or_load(root, workspace_id, channel_id);
268                rt.metrics.record_session_loaded();
269                // Ensure shell_cwd is refreshed (best-effort).
270                if let Some(ref cwd) = startup.shell_cwd {
271                    if let Ok(mut s) = session.try_write() {
272                        s.shell_cwd = Some(cwd.clone());
273                    }
274                }
275                (session, Some(rt))
276            }
277        };
278
279        Self {
280            cache: Arc::new(RwLock::new(SessionCache::new())),
281            session,
282            tool_calls: Arc::new(RwLock::new(Vec::new())),
283            call_count: Arc::new(AtomicUsize::new(0)),
284            cache_ttl_secs: ttl,
285            last_call: Arc::new(RwLock::new(Instant::now())),
286            agent_id: Arc::new(RwLock::new(None)),
287            client_name: Arc::new(RwLock::new(String::new())),
288            autonomy: Arc::new(autonomy::AutonomyState::new()),
289            loop_detector: Arc::new(RwLock::new(
290                crate::core::loop_detection::LoopDetector::with_config(
291                    &crate::core::config::Config::load().loop_detection,
292                ),
293            )),
294            workflow: Arc::new(RwLock::new(
295                crate::core::workflow::load_active().ok().flatten(),
296            )),
297            ledger: Arc::new(RwLock::new(
298                crate::core::context_ledger::ContextLedger::new(),
299            )),
300            pipeline_stats: Arc::new(RwLock::new(crate::core::pipeline::PipelineStats::new())),
301            session_mode,
302            workspace_id: if workspace_id.trim().is_empty() {
303                "default".to_string()
304            } else {
305                workspace_id.trim().to_string()
306            },
307            channel_id: if channel_id.trim().is_empty() {
308                "default".to_string()
309            } else {
310                channel_id.trim().to_string()
311            },
312            context_os,
313            context_ir: None,
314            registry: Some(std::sync::Arc::new(
315                crate::server::registry::build_registry(),
316            )),
317            rules_stale_checked: Arc::new(std::sync::atomic::AtomicBool::new(false)),
318            last_seen_event_id: Arc::new(std::sync::atomic::AtomicI64::new(0)),
319            startup_project_root: startup.project_root,
320            startup_shell_cwd: startup.shell_cwd,
321        }
322    }
323
324    pub fn checkpoint_interval_effective() -> usize {
325        if let Ok(v) = std::env::var("LEAN_CTX_CHECKPOINT_INTERVAL") {
326            if let Ok(parsed) = v.trim().parse::<usize>() {
327                return parsed;
328            }
329        }
330        let profile_interval = crate::core::profiles::active_profile()
331            .autonomy
332            .checkpoint_interval_effective();
333        if profile_interval > 0 {
334            return profile_interval as usize;
335        }
336        crate::core::config::Config::load().checkpoint_interval as usize
337    }
338
339    /// Resolves a (possibly relative) tool path against the session's project_root.
340    /// Absolute paths and "." are returned as-is. Relative paths like "src/main.rs"
341    /// are joined with project_root so tools work regardless of the server's cwd.
342    pub async fn resolve_path(&self, path: &str) -> Result<String, String> {
343        let normalized = crate::hooks::normalize_tool_path(path);
344        if normalized.is_empty() || normalized == "." {
345            return Ok(normalized);
346        }
347        let p = std::path::Path::new(&normalized);
348
349        let (resolved, jail_root) = {
350            let session = self.session.read().await;
351            let jail_root = session
352                .project_root
353                .as_deref()
354                .or(session.shell_cwd.as_deref())
355                .unwrap_or(".")
356                .to_string();
357
358            let resolved = if p.is_absolute() || p.exists() {
359                std::path::PathBuf::from(&normalized)
360            } else if let Some(ref root) = session.project_root {
361                let joined = std::path::Path::new(root).join(&normalized);
362                if joined.exists() {
363                    joined
364                } else if let Some(ref cwd) = session.shell_cwd {
365                    std::path::Path::new(cwd).join(&normalized)
366                } else {
367                    std::path::Path::new(&jail_root).join(&normalized)
368                }
369            } else if let Some(ref cwd) = session.shell_cwd {
370                std::path::Path::new(cwd).join(&normalized)
371            } else {
372                std::path::Path::new(&jail_root).join(&normalized)
373            };
374
375            (resolved, jail_root)
376        };
377
378        let jail_root_path = std::path::Path::new(&jail_root);
379        let jailed = match crate::core::pathjail::jail_path(&resolved, jail_root_path) {
380            Ok(p) => p,
381            Err(e) => {
382                if p.is_absolute() {
383                    if let Some(new_root) = maybe_derive_project_root_from_absolute(&resolved) {
384                        let candidate_under_jail = resolved.starts_with(jail_root_path);
385                        let allow_reroot = if candidate_under_jail {
386                            false
387                        } else if let Some(ref trusted_root) = self.startup_project_root {
388                            std::path::Path::new(trusted_root) == new_root.as_path()
389                        } else {
390                            !has_project_marker(jail_root_path)
391                                || is_suspicious_root(jail_root_path)
392                        };
393
394                        if allow_reroot {
395                            let mut session = self.session.write().await;
396                            let new_root_str = new_root.to_string_lossy().to_string();
397                            session.project_root = Some(new_root_str.clone());
398                            session.shell_cwd = self
399                                .startup_shell_cwd
400                                .as_ref()
401                                .filter(|cwd| std::path::Path::new(cwd).starts_with(&new_root))
402                                .cloned()
403                                .or_else(|| Some(new_root_str.clone()));
404                            let _ = session.save();
405
406                            crate::core::pathjail::jail_path(&resolved, &new_root)?
407                        } else {
408                            return Err(e);
409                        }
410                    } else {
411                        return Err(e);
412                    }
413                } else {
414                    return Err(e);
415                }
416            }
417        };
418
419        Ok(crate::hooks::normalize_tool_path(
420            &jailed.to_string_lossy().replace('\\', "/"),
421        ))
422    }
423
424    /// Like `resolve_path`, but returns the original path on failure instead of an error.
425    pub async fn resolve_path_or_passthrough(&self, path: &str) -> String {
426        self.resolve_path(path)
427            .await
428            .unwrap_or_else(|_| path.to_string())
429    }
430
431    /// Clears the cache and saves the session if the TTL idle threshold has been exceeded.
432    pub async fn check_idle_expiry(&self) {
433        if self.cache_ttl_secs == 0 {
434            return;
435        }
436        let last = *self.last_call.read().await;
437        if last.elapsed().as_secs() >= self.cache_ttl_secs {
438            {
439                let mut session = self.session.write().await;
440                let _ = session.save();
441            }
442            let mut cache = self.cache.write().await;
443            let count = cache.clear();
444            if count > 0 {
445                tracing::info!(
446                    "Cache auto-cleared after {}s idle ({count} file(s))",
447                    self.cache_ttl_secs
448                );
449            }
450        }
451        *self.last_call.write().await = Instant::now();
452    }
453
454    /// Records a tool call's token savings without timing information.
455    pub async fn record_call(
456        &self,
457        tool: &str,
458        original: usize,
459        saved: usize,
460        mode: Option<String>,
461    ) {
462        self.record_call_with_timing(tool, original, saved, mode, 0)
463            .await;
464    }
465
466    /// Records a tool call like `record_call`, but includes an optional file path for observability.
467    pub async fn record_call_with_path(
468        &self,
469        tool: &str,
470        original: usize,
471        saved: usize,
472        mode: Option<String>,
473        path: Option<&str>,
474    ) {
475        self.record_call_with_timing_inner(tool, original, saved, mode, 0, path)
476            .await;
477    }
478
479    /// Records a tool call's token savings, duration, and emits events and stats.
480    pub async fn record_call_with_timing(
481        &self,
482        tool: &str,
483        original: usize,
484        saved: usize,
485        mode: Option<String>,
486        duration_ms: u64,
487    ) {
488        self.record_call_with_timing_inner(tool, original, saved, mode, duration_ms, None)
489            .await;
490    }
491
492    async fn record_call_with_timing_inner(
493        &self,
494        tool: &str,
495        original: usize,
496        saved: usize,
497        mode: Option<String>,
498        duration_ms: u64,
499        path: Option<&str>,
500    ) {
501        let ts = chrono::Local::now().format("%Y-%m-%d %H:%M:%S").to_string();
502        let mut calls = self.tool_calls.write().await;
503        calls.push(ToolCallRecord {
504            tool: tool.to_string(),
505            original_tokens: original,
506            saved_tokens: saved,
507            mode: mode.clone(),
508            duration_ms,
509            timestamp: ts.clone(),
510        });
511
512        if duration_ms > 0 {
513            Self::append_tool_call_log(tool, duration_ms, original, saved, mode.as_deref(), &ts);
514        }
515
516        crate::core::events::emit_tool_call(
517            tool,
518            original as u64,
519            saved as u64,
520            mode.clone(),
521            duration_ms,
522            path.map(ToString::to_string),
523        );
524
525        let output_tokens = original.saturating_sub(saved);
526        crate::core::stats::record(tool, original, output_tokens);
527
528        let mut session = self.session.write().await;
529        session.record_tool_call(saved as u64, original as u64);
530        if tool == "ctx_shell" {
531            session.record_command();
532        }
533        let pending_save = if session.should_save() {
534            session.prepare_save().ok()
535        } else {
536            None
537        };
538        drop(calls);
539        drop(session);
540
541        if let Some(prepared) = pending_save {
542            tokio::task::spawn_blocking(move || {
543                let _ = prepared.write_to_disk();
544            });
545        }
546
547        self.write_mcp_live_stats().await;
548    }
549
550    /// Returns true if over an hour has passed since the last tool call.
551    pub async fn is_prompt_cache_stale(&self) -> bool {
552        let last = *self.last_call.read().await;
553        last.elapsed().as_secs() > 3600
554    }
555
556    /// Promotes lightweight read modes to richer ones when the prompt cache is stale.
557    pub fn upgrade_mode_if_stale(mode: &str, stale: bool) -> &str {
558        if !stale {
559            return mode;
560        }
561        match mode {
562            "full" => "full",
563            "map" => "signatures",
564            m => m,
565        }
566    }
567
568    /// Increments the call counter and returns true if a checkpoint is due.
569    pub fn increment_and_check(&self) -> bool {
570        let count = self.call_count.fetch_add(1, Ordering::Relaxed) + 1;
571        let interval = Self::checkpoint_interval_effective();
572        interval > 0 && count.is_multiple_of(interval)
573    }
574
575    /// Generates a compressed context checkpoint with session state and multi-agent sync.
576    pub async fn auto_checkpoint(&self) -> Option<String> {
577        let cache = self.cache.read().await;
578        if cache.get_all_entries().is_empty() {
579            return None;
580        }
581        let complexity = crate::core::adaptive::classify_from_context(&cache);
582        let checkpoint = ctx_compress::handle(&cache, true, CrpMode::effective());
583        drop(cache);
584
585        let mut session = self.session.write().await;
586        let _ = session.save();
587        let session_summary = session.format_compact();
588        let has_insights = !session.findings.is_empty() || !session.decisions.is_empty();
589        let project_root = session.project_root.clone();
590        drop(session);
591
592        if has_insights {
593            if let Some(ref root) = project_root {
594                let root = root.clone();
595                std::thread::spawn(move || {
596                    auto_consolidate_knowledge(&root);
597                });
598            }
599        }
600
601        let multi_agent_block = self
602            .auto_multi_agent_checkpoint(project_root.as_ref())
603            .await;
604
605        self.record_call("ctx_compress", 0, 0, Some("auto".to_string()))
606            .await;
607
608        self.record_cep_snapshot().await;
609
610        Some(format!(
611            "{checkpoint}\n\n--- SESSION STATE ---\n{session_summary}\n\n{}{multi_agent_block}",
612            complexity.instruction_suffix()
613        ))
614    }
615
616    async fn auto_multi_agent_checkpoint(&self, project_root: Option<&String>) -> String {
617        let Some(root) = project_root else {
618            return String::new();
619        };
620
621        let registry = crate::core::agents::AgentRegistry::load_or_create();
622        let active = registry.list_active(Some(root));
623        if active.len() <= 1 {
624            return String::new();
625        }
626
627        let agent_id = self.agent_id.read().await;
628        let my_id = match agent_id.as_deref() {
629            Some(id) => id.to_string(),
630            None => return String::new(),
631        };
632        drop(agent_id);
633
634        let cache = self.cache.read().await;
635        let entries = cache.get_all_entries();
636        if !entries.is_empty() {
637            let mut by_access: Vec<_> = entries.iter().collect();
638            by_access.sort_by_key(|x| std::cmp::Reverse(x.1.read_count));
639            let top_paths: Vec<&str> = by_access
640                .iter()
641                .take(5)
642                .map(|(key, _)| key.as_str())
643                .collect();
644            let paths_csv = top_paths.join(",");
645
646            let _ = ctx_share::handle("push", Some(&my_id), None, Some(&paths_csv), None, &cache);
647        }
648        drop(cache);
649
650        let pending_count = registry
651            .scratchpad
652            .iter()
653            .filter(|e| !e.read_by.contains(&my_id) && e.from_agent != my_id)
654            .count();
655
656        let shared_dir = crate::core::data_dir::lean_ctx_data_dir()
657            .unwrap_or_default()
658            .join("agents")
659            .join("shared");
660        let shared_count = if shared_dir.exists() {
661            std::fs::read_dir(&shared_dir).map_or(0, std::iter::Iterator::count)
662        } else {
663            0
664        };
665
666        let agent_names: Vec<String> = active
667            .iter()
668            .map(|a| {
669                let role = a.role.as_deref().unwrap_or(&a.agent_type);
670                format!("{role}({})", &a.agent_id[..8.min(a.agent_id.len())])
671            })
672            .collect();
673
674        format!(
675            "\n\n--- MULTI-AGENT SYNC ---\nAgents: {} | Pending msgs: {} | Shared contexts: {}\nAuto-shared top-5 cached files.\n--- END SYNC ---",
676            agent_names.join(", "),
677            pending_count,
678            shared_count,
679        )
680    }
681
682    /// Appends a tool call entry to the rotating `tool-calls.log` file.
683    pub fn append_tool_call_log(
684        tool: &str,
685        duration_ms: u64,
686        original: usize,
687        saved: usize,
688        mode: Option<&str>,
689        timestamp: &str,
690    ) {
691        const MAX_LOG_LINES: usize = 50;
692        if let Ok(dir) = crate::core::data_dir::lean_ctx_data_dir() {
693            let log_path = dir.join("tool-calls.log");
694            let mode_str = mode.unwrap_or("-");
695            let slow = if duration_ms > 5000 { " **SLOW**" } else { "" };
696            let line = format!(
697                "{timestamp}\t{tool}\t{duration_ms}ms\torig={original}\tsaved={saved}\tmode={mode_str}{slow}\n"
698            );
699
700            let mut lines: Vec<String> = std::fs::read_to_string(&log_path)
701                .unwrap_or_default()
702                .lines()
703                .map(std::string::ToString::to_string)
704                .collect();
705
706            lines.push(line.trim_end().to_string());
707            if lines.len() > MAX_LOG_LINES {
708                lines.drain(0..lines.len() - MAX_LOG_LINES);
709            }
710
711            let _ = std::fs::write(&log_path, lines.join("\n") + "\n");
712        }
713    }
714
715    fn compute_cep_stats(
716        calls: &[ToolCallRecord],
717        stats: &crate::core::cache::CacheStats,
718        complexity: &crate::core::adaptive::TaskComplexity,
719    ) -> CepComputedStats {
720        let total_original: u64 = calls.iter().map(|c| c.original_tokens as u64).sum();
721        let total_saved: u64 = calls.iter().map(|c| c.saved_tokens as u64).sum();
722        let total_compressed = total_original.saturating_sub(total_saved);
723        let compression_rate = if total_original > 0 {
724            total_saved as f64 / total_original as f64
725        } else {
726            0.0
727        };
728
729        let modes_used: std::collections::HashSet<&str> =
730            calls.iter().filter_map(|c| c.mode.as_deref()).collect();
731        let mode_diversity = (modes_used.len() as f64 / 10.0).min(1.0);
732        let cache_util = stats.hit_rate() / 100.0;
733        let cep_score = cache_util * 0.3 + mode_diversity * 0.2 + compression_rate * 0.5;
734
735        let mut mode_counts: std::collections::HashMap<String, u64> =
736            std::collections::HashMap::new();
737        for call in calls {
738            if let Some(ref mode) = call.mode {
739                *mode_counts.entry(mode.clone()).or_insert(0) += 1;
740            }
741        }
742
743        CepComputedStats {
744            cep_score: (cep_score * 100.0).round() as u32,
745            cache_util: (cache_util * 100.0).round() as u32,
746            mode_diversity: (mode_diversity * 100.0).round() as u32,
747            compression_rate: (compression_rate * 100.0).round() as u32,
748            total_original,
749            total_compressed,
750            total_saved,
751            mode_counts,
752            complexity: format!("{complexity:?}"),
753            cache_hits: stats.cache_hits,
754            total_reads: stats.total_reads,
755            tool_call_count: calls.len() as u64,
756        }
757    }
758
759    async fn write_mcp_live_stats(&self) {
760        let count = self.call_count.load(Ordering::Relaxed);
761        if count > 1 && !count.is_multiple_of(5) {
762            return;
763        }
764
765        let cache = self.cache.read().await;
766        let calls = self.tool_calls.read().await;
767        let stats = cache.get_stats();
768        let complexity = crate::core::adaptive::classify_from_context(&cache);
769
770        let cs = Self::compute_cep_stats(&calls, stats, &complexity);
771        let started_at = calls
772            .first()
773            .map(|c| c.timestamp.clone())
774            .unwrap_or_default();
775
776        drop(cache);
777        drop(calls);
778        let live = serde_json::json!({
779            "cep_score": cs.cep_score,
780            "cache_utilization": cs.cache_util,
781            "mode_diversity": cs.mode_diversity,
782            "compression_rate": cs.compression_rate,
783            "task_complexity": cs.complexity,
784            "files_cached": cs.total_reads,
785            "total_reads": cs.total_reads,
786            "cache_hits": cs.cache_hits,
787            "tokens_saved": cs.total_saved,
788            "tokens_original": cs.total_original,
789            "tool_calls": cs.tool_call_count,
790            "started_at": started_at,
791            "updated_at": chrono::Local::now().to_rfc3339(),
792        });
793
794        if let Ok(dir) = crate::core::data_dir::lean_ctx_data_dir() {
795            let _ = std::fs::write(dir.join("mcp-live.json"), live.to_string());
796        }
797    }
798
799    /// Persists a CEP (Context Efficiency Protocol) score snapshot for analytics.
800    pub async fn record_cep_snapshot(&self) {
801        let cache = self.cache.read().await;
802        let calls = self.tool_calls.read().await;
803        let stats = cache.get_stats();
804        let complexity = crate::core::adaptive::classify_from_context(&cache);
805
806        let cs = Self::compute_cep_stats(&calls, stats, &complexity);
807
808        drop(cache);
809        drop(calls);
810
811        crate::core::stats::record_cep_session(
812            cs.cep_score,
813            cs.cache_hits,
814            cs.total_reads,
815            cs.total_original,
816            cs.total_compressed,
817            &cs.mode_counts,
818            cs.tool_call_count,
819            &cs.complexity,
820        );
821    }
822}
823
824#[derive(Clone, Debug, Default)]
825struct StartupContext {
826    project_root: Option<String>,
827    shell_cwd: Option<String>,
828}
829
830/// Creates a new `LeanCtxServer` with default configuration.
831pub fn create_server() -> LeanCtxServer {
832    LeanCtxServer::new()
833}
834
835const PROJECT_ROOT_MARKERS: &[&str] = &[
836    ".git",
837    ".lean-ctx.toml",
838    "Cargo.toml",
839    "package.json",
840    "go.mod",
841    "pyproject.toml",
842    "pom.xml",
843    "build.gradle",
844    "Makefile",
845    ".planning",
846];
847
848fn has_project_marker(dir: &std::path::Path) -> bool {
849    PROJECT_ROOT_MARKERS.iter().any(|m| dir.join(m).exists())
850}
851
852fn is_suspicious_root(dir: &std::path::Path) -> bool {
853    let s = dir.to_string_lossy();
854    s.contains("/.claude")
855        || s.contains("/.codex")
856        || s.contains("\\.claude")
857        || s.contains("\\.codex")
858}
859
860fn canonicalize_path(path: &std::path::Path) -> String {
861    crate::core::pathutil::safe_canonicalize_or_self(path)
862        .to_string_lossy()
863        .to_string()
864}
865
866fn detect_startup_context(
867    explicit_project_root: Option<&str>,
868    startup_cwd: Option<&std::path::Path>,
869) -> StartupContext {
870    let shell_cwd = startup_cwd.map(canonicalize_path);
871    let project_root = explicit_project_root
872        .map(|root| canonicalize_path(std::path::Path::new(root)))
873        .or_else(|| {
874            startup_cwd
875                .and_then(maybe_derive_project_root_from_absolute)
876                .map(|p| canonicalize_path(&p))
877        });
878
879    let shell_cwd = match (shell_cwd, project_root.as_ref()) {
880        (Some(cwd), Some(root))
881            if std::path::Path::new(&cwd).starts_with(std::path::Path::new(root)) =>
882        {
883            Some(cwd)
884        }
885        (_, Some(root)) => Some(root.clone()),
886        (cwd, None) => cwd,
887    };
888
889    StartupContext {
890        project_root,
891        shell_cwd,
892    }
893}
894
895fn maybe_derive_project_root_from_absolute(abs: &std::path::Path) -> Option<std::path::PathBuf> {
896    let mut cur = if abs.is_dir() {
897        abs.to_path_buf()
898    } else {
899        abs.parent()?.to_path_buf()
900    };
901    loop {
902        if has_project_marker(&cur) {
903            return Some(crate::core::pathutil::safe_canonicalize_or_self(&cur));
904        }
905        if !cur.pop() {
906            break;
907        }
908    }
909    None
910}
911
912fn auto_consolidate_knowledge(project_root: &str) {
913    use crate::core::knowledge::ProjectKnowledge;
914    use crate::core::session::SessionState;
915
916    let Some(session) = SessionState::load_latest() else {
917        return;
918    };
919
920    if session.findings.is_empty() && session.decisions.is_empty() {
921        return;
922    }
923
924    let Ok(policy) = crate::core::config::Config::load().memory_policy_effective() else {
925        return;
926    };
927    let mut knowledge = ProjectKnowledge::load_or_create(project_root);
928
929    for finding in &session.findings {
930        let key = if let Some(ref file) = finding.file {
931            if let Some(line) = finding.line {
932                format!("{file}:{line}")
933            } else {
934                file.clone()
935            }
936        } else {
937            "finding-auto".to_string()
938        };
939        knowledge.remember("finding", &key, &finding.summary, &session.id, 0.7, &policy);
940    }
941
942    for decision in &session.decisions {
943        let key = decision
944            .summary
945            .chars()
946            .take(50)
947            .collect::<String>()
948            .replace(' ', "-")
949            .to_lowercase();
950        knowledge.remember(
951            "decision",
952            &key,
953            &decision.summary,
954            &session.id,
955            0.85,
956            &policy,
957        );
958    }
959
960    let task_desc = session
961        .task
962        .as_ref()
963        .map(|t| t.description.clone())
964        .unwrap_or_default();
965
966    let summary = format!(
967        "Auto-consolidate session {}: {} — {} findings, {} decisions",
968        session.id,
969        task_desc,
970        session.findings.len(),
971        session.decisions.len()
972    );
973    knowledge.consolidate(&summary, vec![session.id.clone()], &policy);
974    let _ = knowledge.save();
975}
976
977#[cfg(test)]
978mod resolve_path_tests {
979    use super::*;
980
981    fn create_git_root(path: &std::path::Path) -> String {
982        std::fs::create_dir_all(path.join(".git")).unwrap();
983        canonicalize_path(path)
984    }
985
986    #[tokio::test]
987    async fn resolve_path_can_reroot_to_trusted_startup_root_when_session_root_is_stale() {
988        let tmp = tempfile::tempdir().unwrap();
989        let stale = tmp.path().join("stale");
990        let real = tmp.path().join("real");
991        std::fs::create_dir_all(&stale).unwrap();
992        let real_root = create_git_root(&real);
993        std::fs::write(real.join("a.txt"), "ok").unwrap();
994
995        let server = LeanCtxServer::new_with_startup(
996            None,
997            Some(real.as_path()),
998            SessionMode::Personal,
999            "default",
1000            "default",
1001        );
1002        {
1003            let mut session = server.session.write().await;
1004            session.project_root = Some(stale.to_string_lossy().to_string());
1005            session.shell_cwd = Some(stale.to_string_lossy().to_string());
1006        }
1007
1008        let out = server
1009            .resolve_path(&real.join("a.txt").to_string_lossy())
1010            .await
1011            .unwrap();
1012
1013        assert!(out.ends_with("/a.txt"));
1014
1015        let session = server.session.read().await;
1016        assert_eq!(session.project_root.as_deref(), Some(real_root.as_str()));
1017        assert_eq!(session.shell_cwd.as_deref(), Some(real_root.as_str()));
1018    }
1019
1020    #[tokio::test]
1021    async fn resolve_path_rejects_absolute_path_outside_trusted_startup_root() {
1022        let tmp = tempfile::tempdir().unwrap();
1023        let stale = tmp.path().join("stale");
1024        let root = tmp.path().join("root");
1025        let other = tmp.path().join("other");
1026        std::fs::create_dir_all(&stale).unwrap();
1027        create_git_root(&root);
1028        let _other_value = create_git_root(&other);
1029        std::fs::write(other.join("b.txt"), "no").unwrap();
1030
1031        let server = LeanCtxServer::new_with_startup(
1032            None,
1033            Some(root.as_path()),
1034            SessionMode::Personal,
1035            "default",
1036            "default",
1037        );
1038        {
1039            let mut session = server.session.write().await;
1040            session.project_root = Some(stale.to_string_lossy().to_string());
1041            session.shell_cwd = Some(stale.to_string_lossy().to_string());
1042        }
1043
1044        let err = server
1045            .resolve_path(&other.join("b.txt").to_string_lossy())
1046            .await
1047            .unwrap_err();
1048        assert!(err.contains("path escapes project root"));
1049
1050        let session = server.session.read().await;
1051        assert_eq!(
1052            session.project_root.as_deref(),
1053            Some(stale.to_string_lossy().as_ref())
1054        );
1055    }
1056
1057    #[tokio::test]
1058    #[allow(clippy::await_holding_lock)]
1059    async fn startup_prefers_workspace_scoped_session_over_global_latest() {
1060        let _lock = crate::core::data_dir::test_env_lock();
1061        let _data = tempfile::tempdir().unwrap();
1062        let _tmp = tempfile::tempdir().unwrap();
1063
1064        std::env::set_var("LEAN_CTX_DATA_DIR", _data.path());
1065
1066        let repo_a = _tmp.path().join("repo-a");
1067        let repo_b = _tmp.path().join("repo-b");
1068        let root_a = create_git_root(&repo_a);
1069        let root_b = create_git_root(&repo_b);
1070
1071        let mut session_b = SessionState::new();
1072        session_b.project_root = Some(root_b.clone());
1073        session_b.shell_cwd = Some(root_b.clone());
1074        session_b.set_task("repo-b task", None);
1075        session_b.save().unwrap();
1076
1077        std::thread::sleep(std::time::Duration::from_millis(50));
1078
1079        let mut session_a = SessionState::new();
1080        session_a.project_root = Some(root_a.clone());
1081        session_a.shell_cwd = Some(root_a.clone());
1082        session_a.set_task("repo-a latest task", None);
1083        session_a.save().unwrap();
1084
1085        let server = LeanCtxServer::new_with_startup(
1086            None,
1087            Some(repo_b.as_path()),
1088            SessionMode::Personal,
1089            "default",
1090            "default",
1091        );
1092        std::env::remove_var("LEAN_CTX_DATA_DIR");
1093
1094        let session = server.session.read().await;
1095        assert_eq!(session.project_root.as_deref(), Some(root_b.as_str()));
1096        assert_eq!(session.shell_cwd.as_deref(), Some(root_b.as_str()));
1097        assert_eq!(
1098            session.task.as_ref().map(|t| t.description.as_str()),
1099            Some("repo-b task")
1100        );
1101    }
1102
1103    #[tokio::test]
1104    #[allow(clippy::await_holding_lock)]
1105    async fn startup_creates_fresh_session_for_new_workspace_and_preserves_subdir_cwd() {
1106        let _lock = crate::core::data_dir::test_env_lock();
1107        let _data = tempfile::tempdir().unwrap();
1108        let _tmp = tempfile::tempdir().unwrap();
1109
1110        std::env::set_var("LEAN_CTX_DATA_DIR", _data.path());
1111
1112        let repo_a = _tmp.path().join("repo-a");
1113        let repo_b = _tmp.path().join("repo-b");
1114        let repo_b_src = repo_b.join("src");
1115        let root_a = create_git_root(&repo_a);
1116        let root_b = create_git_root(&repo_b);
1117        std::fs::create_dir_all(&repo_b_src).unwrap();
1118        let repo_b_src_value = canonicalize_path(&repo_b_src);
1119
1120        let mut session_a = SessionState::new();
1121        session_a.project_root = Some(root_a.clone());
1122        session_a.shell_cwd = Some(root_a.clone());
1123        session_a.set_task("repo-a latest task", None);
1124        let old_id = session_a.id.clone();
1125        session_a.save().unwrap();
1126
1127        let server = LeanCtxServer::new_with_startup(
1128            None,
1129            Some(repo_b_src.as_path()),
1130            SessionMode::Personal,
1131            "default",
1132            "default",
1133        );
1134        std::env::remove_var("LEAN_CTX_DATA_DIR");
1135
1136        let session = server.session.read().await;
1137        assert_eq!(session.project_root.as_deref(), Some(root_b.as_str()));
1138        assert_eq!(
1139            session.shell_cwd.as_deref(),
1140            Some(repo_b_src_value.as_str())
1141        );
1142        assert!(session.task.is_none());
1143        assert_ne!(session.id, old_id);
1144    }
1145
1146    #[tokio::test]
1147    async fn resolve_path_does_not_auto_update_when_current_root_is_real_project() {
1148        let tmp = tempfile::tempdir().unwrap();
1149        let root = tmp.path().join("root");
1150        let other = tmp.path().join("other");
1151        let root_value = create_git_root(&root);
1152        create_git_root(&other);
1153        std::fs::write(other.join("b.txt"), "no").unwrap();
1154
1155        let root_str = root.to_string_lossy().to_string();
1156        let server = LeanCtxServer::new_with_project_root(Some(&root_str));
1157
1158        let err = server
1159            .resolve_path(&other.join("b.txt").to_string_lossy())
1160            .await
1161            .unwrap_err();
1162        assert!(err.contains("path escapes project root"));
1163
1164        let session = server.session.read().await;
1165        assert_eq!(session.project_root.as_deref(), Some(root_value.as_str()));
1166    }
1167}
lean_ctx/tools/mod.rs

lean_ctx/tools/
mod.rs
