lean-ctx 3.3.8

Context Runtime for AI Agents with CCP. 46 MCP tools, 10 read modes, 90+ compression patterns, cross-session memory (CCP), persistent AI knowledge with temporal facts + contradiction detection, multi-agent context sharing + diaries, LITM-aware positioning, AAAK compact format, adaptive compression with Thompson Sampling bandits. Supports 24 AI tools. Reduces LLM token consumption by up to 99%.
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
use std::path::PathBuf;

pub mod agents;
mod support;
use agents::*;
use support::{
    ensure_codex_hooks_enabled, install_codex_instruction_docs, install_named_json_server,
    upsert_lean_ctx_codex_hook_entries,
};

fn mcp_server_quiet_mode() -> bool {
    std::env::var_os("LEAN_CTX_MCP_SERVER").is_some()
        || matches!(std::env::var("LEAN_CTX_QUIET"), Ok(value) if value.trim() == "1")
}

/// Silently refresh all hook scripts for agents that are already configured.
/// Called after updates and on MCP server start to ensure hooks match the current binary version.
pub fn refresh_installed_hooks() {
    let home = match dirs::home_dir() {
        Some(h) => h,
        None => return,
    };

    let claude_dir = crate::setup::claude_config_dir(&home);
    let claude_hooks = claude_dir.join("hooks/lean-ctx-rewrite.sh").exists()
        || claude_dir.join("settings.json").exists()
            && std::fs::read_to_string(claude_dir.join("settings.json"))
                .unwrap_or_default()
                .contains("lean-ctx");

    if claude_hooks {
        install_claude_hook_scripts(&home);
        install_claude_hook_config(&home);
    }

    let cursor_hooks = home.join(".cursor/hooks/lean-ctx-rewrite.sh").exists()
        || home.join(".cursor/hooks.json").exists()
            && std::fs::read_to_string(home.join(".cursor/hooks.json"))
                .unwrap_or_default()
                .contains("lean-ctx");

    if cursor_hooks {
        install_cursor_hook_scripts(&home);
        install_cursor_hook_config(&home);
    }

    let gemini_rewrite = home.join(".gemini/hooks/lean-ctx-rewrite-gemini.sh");
    let gemini_legacy = home.join(".gemini/hooks/lean-ctx-hook-gemini.sh");
    if gemini_rewrite.exists() || gemini_legacy.exists() {
        install_gemini_hook_scripts(&home);
        install_gemini_hook_config(&home);
    }

    let codex_hooks = home.join(".codex/hooks/lean-ctx-rewrite-codex.sh").exists()
        || home.join(".codex/hooks.json").exists()
            && std::fs::read_to_string(home.join(".codex/hooks.json"))
                .unwrap_or_default()
                .contains("lean-ctx");

    if codex_hooks {
        install_codex_hook();
    }
}

fn resolve_binary_path() -> String {
    if is_lean_ctx_in_path() {
        return "lean-ctx".to_string();
    }
    crate::core::portable_binary::resolve_portable_binary()
}

fn is_lean_ctx_in_path() -> bool {
    let which_cmd = if cfg!(windows) { "where" } else { "which" };
    std::process::Command::new(which_cmd)
        .arg("lean-ctx")
        .stdout(std::process::Stdio::null())
        .stderr(std::process::Stdio::null())
        .status()
        .map(|s| s.success())
        .unwrap_or(false)
}

fn resolve_binary_path_for_bash() -> String {
    let path = resolve_binary_path();
    to_bash_compatible_path(&path)
}

pub fn to_bash_compatible_path(path: &str) -> String {
    let path = match crate::core::pathutil::strip_verbatim_str(path) {
        Some(stripped) => stripped,
        None => path.replace('\\', "/"),
    };
    if path.len() >= 2 && path.as_bytes()[1] == b':' {
        let drive = (path.as_bytes()[0] as char).to_ascii_lowercase();
        format!("/{drive}{}", &path[2..])
    } else {
        path
    }
}

/// Normalize paths from any client format to a consistent OS-native form.
/// Handles MSYS2/Git Bash (`/c/Users/...` -> `C:/Users/...`), mixed separators,
/// double slashes, and trailing slashes. Always uses forward slashes for consistency.
pub fn normalize_tool_path(path: &str) -> String {
    let mut p = match crate::core::pathutil::strip_verbatim_str(path) {
        Some(stripped) => stripped,
        None => path.to_string(),
    };

    // MSYS2/Git Bash: /c/Users/... -> C:/Users/...
    if p.len() >= 3
        && p.starts_with('/')
        && p.as_bytes()[1].is_ascii_alphabetic()
        && p.as_bytes()[2] == b'/'
    {
        let drive = p.as_bytes()[1].to_ascii_uppercase() as char;
        p = format!("{drive}:{}", &p[2..]);
    }

    p = p.replace('\\', "/");

    // Collapse double slashes (preserve UNC paths starting with //)
    while p.contains("//") && !p.starts_with("//") {
        p = p.replace("//", "/");
    }

    // Remove trailing slash (unless root like "/" or "C:/")
    if p.len() > 1 && p.ends_with('/') && !p.ends_with(":/") {
        p.pop();
    }

    p
}

pub fn generate_rewrite_script(binary: &str) -> String {
    let case_pattern = crate::rewrite_registry::bash_case_pattern();
    format!(
        r#"#!/usr/bin/env bash
# lean-ctx PreToolUse hook — rewrites bash commands to lean-ctx equivalents
set -euo pipefail

LEAN_CTX_BIN="{binary}"

INPUT=$(cat)
TOOL=$(echo "$INPUT" | grep -oE '"tool_name":"([^"\\]|\\.)*"' | head -1 | sed 's/^"tool_name":"//;s/"$//' | sed 's/\\"/"/g;s/\\\\/\\/g')

if [ "$TOOL" != "Bash" ] && [ "$TOOL" != "bash" ]; then
  exit 0
fi

CMD=$(echo "$INPUT" | grep -oE '"command":"([^"\\]|\\.)*"' | head -1 | sed 's/^"command":"//;s/"$//' | sed 's/\\"/"/g;s/\\\\/\\/g')

if [ -z "$CMD" ] || echo "$CMD" | grep -qE "^(lean-ctx |$LEAN_CTX_BIN )"; then
  exit 0
fi

case "$CMD" in
  {case_pattern})
    # Shell-escape then JSON-escape (two passes)
    SHELL_ESC=$(printf '%s' "$CMD" | sed 's/\\/\\\\/g;s/"/\\"/g')
    REWRITE="$LEAN_CTX_BIN -c \"$SHELL_ESC\""
    JSON_CMD=$(printf '%s' "$REWRITE" | sed 's/\\/\\\\/g;s/"/\\"/g')
    printf '{{"hookSpecificOutput":{{"hookEventName":"PreToolUse","permissionDecision":"allow","updatedInput":{{"command":"%s"}}}}}}' "$JSON_CMD"
    ;;
  *) exit 0 ;;
esac
"#
    )
}

pub fn generate_compact_rewrite_script(binary: &str) -> String {
    let case_pattern = crate::rewrite_registry::bash_case_pattern();
    format!(
        r#"#!/usr/bin/env bash
# lean-ctx hook — rewrites shell commands
set -euo pipefail
LEAN_CTX_BIN="{binary}"
INPUT=$(cat)
CMD=$(echo "$INPUT" | grep -oE '"command":"([^"\\]|\\.)*"' | head -1 | sed 's/^"command":"//;s/"$//' | sed 's/\\"/"/g;s/\\\\/\\/g' 2>/dev/null || echo "")
if [ -z "$CMD" ] || echo "$CMD" | grep -qE "^(lean-ctx |$LEAN_CTX_BIN )"; then exit 0; fi
case "$CMD" in
  {case_pattern})
    SHELL_ESC=$(printf '%s' "$CMD" | sed 's/\\/\\\\/g;s/"/\\"/g')
    REWRITE="$LEAN_CTX_BIN -c \"$SHELL_ESC\""
    JSON_CMD=$(printf '%s' "$REWRITE" | sed 's/\\/\\\\/g;s/"/\\"/g')
    printf '{{"hookSpecificOutput":{{"hookEventName":"PreToolUse","permissionDecision":"allow","updatedInput":{{"command":"%s"}}}}}}' "$JSON_CMD" ;;
  *) exit 0 ;;
esac
"#
    )
}

const REDIRECT_SCRIPT_CLAUDE: &str = r#"#!/usr/bin/env bash
# lean-ctx PreToolUse hook — all native tools pass through
# Read/Grep/ListFiles are allowed so Edit (which requires native Read) works.
# The MCP instructions guide the AI to prefer ctx_read/ctx_search/ctx_tree.
exit 0
"#;

const REDIRECT_SCRIPT_GENERIC: &str = r#"#!/usr/bin/env bash
# lean-ctx hook — all native tools pass through
exit 0
"#;

pub fn install_project_rules() {
    if crate::core::config::Config::load().rules_scope_effective()
        == crate::core::config::RulesScope::Global
    {
        return;
    }

    let cwd = std::env::current_dir().unwrap_or_default();

    if !is_inside_git_repo(&cwd) {
        eprintln!(
            "  Skipping project files: not inside a git repository.\n  \
             Run this command from your project root to create CLAUDE.md / AGENTS.md."
        );
        return;
    }

    let home = dirs::home_dir().unwrap_or_default();
    if cwd == home {
        eprintln!(
            "  Skipping project files: current directory is your home folder.\n  \
             Run this command from a project directory instead."
        );
        return;
    }

    ensure_project_agents_integration(&cwd);

    let cursorrules = cwd.join(".cursorrules");
    if !cursorrules.exists()
        || !std::fs::read_to_string(&cursorrules)
            .unwrap_or_default()
            .contains("lean-ctx")
    {
        let content = CURSORRULES_TEMPLATE;
        if cursorrules.exists() {
            let mut existing = std::fs::read_to_string(&cursorrules).unwrap_or_default();
            if !existing.ends_with('\n') {
                existing.push('\n');
            }
            existing.push('\n');
            existing.push_str(content);
            write_file(&cursorrules, &existing);
        } else {
            write_file(&cursorrules, content);
        }
        println!("Created/updated .cursorrules in project root.");
    }

    let claude_rules_dir = cwd.join(".claude").join("rules");
    let claude_rules_file = claude_rules_dir.join("lean-ctx.md");
    if !claude_rules_file.exists()
        || !std::fs::read_to_string(&claude_rules_file)
            .unwrap_or_default()
            .contains(crate::rules_inject::RULES_VERSION_STR)
    {
        let _ = std::fs::create_dir_all(&claude_rules_dir);
        write_file(
            &claude_rules_file,
            crate::rules_inject::rules_dedicated_markdown(),
        );
        println!("Created .claude/rules/lean-ctx.md (Claude Code project rules).");
    }

    install_claude_project_hooks(&cwd);

    let kiro_dir = cwd.join(".kiro");
    if kiro_dir.exists() {
        let steering_dir = kiro_dir.join("steering");
        let steering_file = steering_dir.join("lean-ctx.md");
        if !steering_file.exists()
            || !std::fs::read_to_string(&steering_file)
                .unwrap_or_default()
                .contains("lean-ctx")
        {
            let _ = std::fs::create_dir_all(&steering_dir);
            write_file(&steering_file, KIRO_STEERING_TEMPLATE);
            println!("Created .kiro/steering/lean-ctx.md (Kiro steering).");
        }
    }
}

const PROJECT_LEAN_CTX_MD_MARKER: &str = "<!-- lean-ctx-owned: PROJECT-LEAN-CTX.md v1 -->";
const PROJECT_LEAN_CTX_MD: &str = "LEAN-CTX.md";
const PROJECT_AGENTS_MD: &str = "AGENTS.md";
const AGENTS_BLOCK_START: &str = "<!-- lean-ctx -->";
const AGENTS_BLOCK_END: &str = "<!-- /lean-ctx -->";

fn ensure_project_agents_integration(cwd: &std::path::Path) {
    let lean_ctx_md = cwd.join(PROJECT_LEAN_CTX_MD);
    let desired = format!(
        "{PROJECT_LEAN_CTX_MD_MARKER}\n{}\n",
        crate::rules_inject::rules_dedicated_markdown()
    );

    if !lean_ctx_md.exists() {
        write_file(&lean_ctx_md, &desired);
    } else if std::fs::read_to_string(&lean_ctx_md)
        .unwrap_or_default()
        .contains(PROJECT_LEAN_CTX_MD_MARKER)
    {
        let current = std::fs::read_to_string(&lean_ctx_md).unwrap_or_default();
        if !current.contains(crate::rules_inject::RULES_VERSION_STR) {
            write_file(&lean_ctx_md, &desired);
        }
    }

    let block = format!(
        "{AGENTS_BLOCK_START}\n\
## lean-ctx\n\n\
Prefer lean-ctx MCP tools over native equivalents for token savings.\n\
Full rules: @{PROJECT_LEAN_CTX_MD}\n\
{AGENTS_BLOCK_END}\n"
    );

    let agents_md = cwd.join(PROJECT_AGENTS_MD);
    if !agents_md.exists() {
        let content = format!("# Agent Instructions\n\n{block}");
        write_file(&agents_md, &content);
        println!("Created AGENTS.md in project root (lean-ctx reference only).");
        return;
    }

    let existing = std::fs::read_to_string(&agents_md).unwrap_or_default();
    if existing.contains(AGENTS_BLOCK_START) {
        let updated = replace_marked_block(&existing, AGENTS_BLOCK_START, AGENTS_BLOCK_END, &block);
        if updated != existing {
            write_file(&agents_md, &updated);
        }
        return;
    }

    if existing.contains("lean-ctx") && existing.contains(PROJECT_LEAN_CTX_MD) {
        return;
    }

    let mut out = existing;
    if !out.ends_with('\n') {
        out.push('\n');
    }
    out.push('\n');
    out.push_str(&block);
    write_file(&agents_md, &out);
    println!("Updated AGENTS.md (added lean-ctx reference block).");
}

fn replace_marked_block(content: &str, start: &str, end: &str, replacement: &str) -> String {
    let s = content.find(start);
    let e = content.find(end);
    match (s, e) {
        (Some(si), Some(ei)) if ei >= si => {
            let after_end = ei + end.len();
            let before = &content[..si];
            let after = &content[after_end..];
            let mut out = String::new();
            out.push_str(before.trim_end_matches('\n'));
            out.push('\n');
            out.push('\n');
            out.push_str(replacement.trim_end_matches('\n'));
            out.push('\n');
            out.push_str(after.trim_start_matches('\n'));
            out
        }
        _ => content.to_string(),
    }
}

const CURSORRULES_TEMPLATE: &str = "\
# lean-ctx — Context Engineering Layer

PREFER lean-ctx MCP tools over native equivalents for token savings:

| PREFER | OVER | Why |
|--------|------|-----|
| `ctx_read(path)` | `Read` | Cached, 10 compression modes |
| `ctx_shell(command)` | `Shell` | Pattern compression |
| `ctx_search(pattern, path)` | `Grep` | Compact results |
| `ctx_tree(path, depth)` | `ls` / `find` | Directory maps |
| `ctx_edit(path, old_string, new_string)` | `Edit` (when Read unavailable) | Search-and-replace without native Read |

Edit files: use native Edit/StrReplace if available. If Edit requires Read and Read is unavailable, use ctx_edit.
Write, Delete, Glob — use normally. NEVER loop on Edit failures — switch to ctx_edit immediately.
";

pub const KIRO_STEERING_TEMPLATE: &str = "\
---
inclusion: always
---

# lean-ctx — Context Engineering Layer

The workspace has the `lean-ctx` MCP server installed. You MUST prefer lean-ctx tools over native equivalents for token efficiency and caching.

## Mandatory Tool Preferences

| Use this | Instead of | Why |
|----------|-----------|-----|
| `mcp_lean_ctx_ctx_read` | `readFile`, `readCode` | Cached reads, 10 compression modes, re-reads cost ~13 tokens |
| `mcp_lean_ctx_ctx_multi_read` | `readMultipleFiles` | Batch cached reads in one call |
| `mcp_lean_ctx_ctx_shell` | `executeBash` | Pattern compression for git/npm/test output |
| `mcp_lean_ctx_ctx_search` | `grepSearch` | Compact, .gitignore-aware results |
| `mcp_lean_ctx_ctx_tree` | `listDirectory` | Compact directory maps with file counts |

## When to use native Kiro tools instead

- `fsWrite` / `fsAppend` — always use native (lean-ctx doesn't write files)
- `strReplace` — always use native (precise string replacement)
- `semanticRename` / `smartRelocate` — always use native (IDE integration)
- `getDiagnostics` — always use native (language server diagnostics)
- `deleteFile` — always use native

## Session management

- At the start of a long task, call `mcp_lean_ctx_ctx_preload` with a task description to warm the cache
- Use `mcp_lean_ctx_ctx_compress` periodically in long conversations to checkpoint context
- Use `mcp_lean_ctx_ctx_knowledge` to persist important discoveries across sessions

## Rules

- NEVER loop on edit failures — switch to `mcp_lean_ctx_ctx_edit` immediately
- For large files, use `mcp_lean_ctx_ctx_read` with `mode: \"signatures\"` or `mode: \"map\"` first
- For re-reading a file you already read, just call `mcp_lean_ctx_ctx_read` again (cache hit = ~13 tokens)
- When running tests or build commands, use `mcp_lean_ctx_ctx_shell` for compressed output
";

pub fn install_agent_hook(agent: &str, global: bool) {
    match agent {
        "claude" | "claude-code" => install_claude_hook(global),
        "cursor" => install_cursor_hook(global),
        "gemini" | "antigravity" => install_gemini_hook(),
        "codex" => install_codex_hook(),
        "windsurf" => install_windsurf_rules(global),
        "cline" | "roo" => install_cline_rules(global),
        "copilot" => install_copilot_hook(global),
        "pi" => install_pi_hook(global),
        "qwen" => install_mcp_json_agent(
            "Qwen Code",
            "~/.qwen/mcp.json",
            &dirs::home_dir().unwrap_or_default().join(".qwen/mcp.json"),
        ),
        "trae" => install_mcp_json_agent(
            "Trae",
            "~/.trae/mcp.json",
            &dirs::home_dir().unwrap_or_default().join(".trae/mcp.json"),
        ),
        "amazonq" => install_mcp_json_agent(
            "Amazon Q Developer",
            "~/.aws/amazonq/mcp.json",
            &dirs::home_dir()
                .unwrap_or_default()
                .join(".aws/amazonq/mcp.json"),
        ),
        "jetbrains" => install_jetbrains_hook(),
        "kiro" => install_kiro_hook(),
        "verdent" => install_mcp_json_agent(
            "Verdent",
            "~/.verdent/mcp.json",
            &dirs::home_dir()
                .unwrap_or_default()
                .join(".verdent/mcp.json"),
        ),
        "opencode" => install_opencode_hook(),
        "aider" => install_mcp_json_agent(
            "Aider",
            "~/.aider/mcp.json",
            &dirs::home_dir().unwrap_or_default().join(".aider/mcp.json"),
        ),
        "amp" => install_amp_hook(),
        "crush" => install_crush_hook(),
        "hermes" => install_hermes_hook(global),
        _ => {
            eprintln!("Unknown agent: {agent}");
            eprintln!("  Supported: claude, cursor, gemini, codex, windsurf, cline, roo, copilot, pi, qwen, trae, amazonq, jetbrains, kiro, verdent, opencode, aider, amp, crush, antigravity, hermes");
            std::process::exit(1);
        }
    }
}

fn write_file(path: &std::path::Path, content: &str) {
    if let Err(e) = crate::config_io::write_atomic_with_backup(path, content) {
        eprintln!("Error writing {}: {e}", path.display());
    }
}

fn is_inside_git_repo(path: &std::path::Path) -> bool {
    let mut p = path;
    loop {
        if p.join(".git").exists() {
            return true;
        }
        match p.parent() {
            Some(parent) => p = parent,
            None => return false,
        }
    }
}

#[cfg(unix)]
fn make_executable(path: &PathBuf) {
    use std::os::unix::fs::PermissionsExt;
    let _ = std::fs::set_permissions(path, std::fs::Permissions::from_mode(0o755));
}

#[cfg(not(unix))]
fn make_executable(_path: &PathBuf) {}

fn full_server_entry(binary: &str) -> serde_json::Value {
    let data_dir = crate::core::data_dir::lean_ctx_data_dir()
        .map(|d| d.to_string_lossy().to_string())
        .unwrap_or_default();
    let auto_approve = crate::core::editor_registry::auto_approve_tools();
    serde_json::json!({
        "command": binary,
        "env": { "LEAN_CTX_DATA_DIR": data_dir },
        "autoApprove": auto_approve
    })
}

fn install_mcp_json_agent(name: &str, display_path: &str, config_path: &std::path::Path) {
    let binary = resolve_binary_path();
    let entry = full_server_entry(&binary);
    install_named_json_server(name, display_path, config_path, "mcpServers", entry);
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn bash_path_unix_unchanged() {
        assert_eq!(
            to_bash_compatible_path("/usr/local/bin/lean-ctx"),
            "/usr/local/bin/lean-ctx"
        );
    }

    #[test]
    fn bash_path_home_unchanged() {
        assert_eq!(
            to_bash_compatible_path("/home/user/.cargo/bin/lean-ctx"),
            "/home/user/.cargo/bin/lean-ctx"
        );
    }

    #[test]
    fn bash_path_windows_drive_converted() {
        assert_eq!(
            to_bash_compatible_path("C:\\Users\\Fraser\\bin\\lean-ctx.exe"),
            "/c/Users/Fraser/bin/lean-ctx.exe"
        );
    }

    #[test]
    fn bash_path_windows_lowercase_drive() {
        assert_eq!(
            to_bash_compatible_path("D:\\tools\\lean-ctx.exe"),
            "/d/tools/lean-ctx.exe"
        );
    }

    #[test]
    fn bash_path_windows_forward_slashes() {
        assert_eq!(
            to_bash_compatible_path("C:/Users/Fraser/bin/lean-ctx.exe"),
            "/c/Users/Fraser/bin/lean-ctx.exe"
        );
    }

    #[test]
    fn bash_path_bare_name_unchanged() {
        assert_eq!(to_bash_compatible_path("lean-ctx"), "lean-ctx");
    }

    #[test]
    fn normalize_msys2_path() {
        assert_eq!(
            normalize_tool_path("/c/Users/game/Downloads/project"),
            "C:/Users/game/Downloads/project"
        );
    }

    #[test]
    fn normalize_msys2_drive_d() {
        assert_eq!(
            normalize_tool_path("/d/Projects/app/src"),
            "D:/Projects/app/src"
        );
    }

    #[test]
    fn normalize_backslashes() {
        assert_eq!(
            normalize_tool_path("C:\\Users\\game\\project\\src"),
            "C:/Users/game/project/src"
        );
    }

    #[test]
    fn normalize_mixed_separators() {
        assert_eq!(
            normalize_tool_path("C:\\Users/game\\project/src"),
            "C:/Users/game/project/src"
        );
    }

    #[test]
    fn normalize_double_slashes() {
        assert_eq!(
            normalize_tool_path("/home/user//project///src"),
            "/home/user/project/src"
        );
    }

    #[test]
    fn normalize_trailing_slash() {
        assert_eq!(
            normalize_tool_path("/home/user/project/"),
            "/home/user/project"
        );
    }

    #[test]
    fn normalize_root_preserved() {
        assert_eq!(normalize_tool_path("/"), "/");
    }

    #[test]
    fn normalize_windows_root_preserved() {
        assert_eq!(normalize_tool_path("C:/"), "C:/");
    }

    #[test]
    fn normalize_unix_path_unchanged() {
        assert_eq!(
            normalize_tool_path("/home/user/project/src/main.rs"),
            "/home/user/project/src/main.rs"
        );
    }

    #[test]
    fn normalize_relative_path_unchanged() {
        assert_eq!(normalize_tool_path("src/main.rs"), "src/main.rs");
    }

    #[test]
    fn normalize_dot_unchanged() {
        assert_eq!(normalize_tool_path("."), ".");
    }

    #[test]
    fn normalize_unc_path_preserved() {
        assert_eq!(
            normalize_tool_path("//server/share/file"),
            "//server/share/file"
        );
    }

    #[test]
    fn cursor_hook_config_has_version_and_object_hooks() {
        let config = serde_json::json!({
            "version": 1,
            "hooks": {
                "preToolUse": [
                    {
                        "matcher": "terminal_command",
                        "command": "lean-ctx hook rewrite"
                    },
                    {
                        "matcher": "read_file|grep|search|list_files|list_directory",
                        "command": "lean-ctx hook redirect"
                    }
                ]
            }
        });

        let json_str = serde_json::to_string_pretty(&config).unwrap();
        let parsed: serde_json::Value = serde_json::from_str(&json_str).unwrap();

        assert_eq!(parsed["version"], 1);
        assert!(parsed["hooks"].is_object());
        assert!(parsed["hooks"]["preToolUse"].is_array());
        assert_eq!(parsed["hooks"]["preToolUse"].as_array().unwrap().len(), 2);
        assert_eq!(
            parsed["hooks"]["preToolUse"][0]["matcher"],
            "terminal_command"
        );
    }

    #[test]
    fn cursor_hook_detects_old_format_needs_migration() {
        let old_format = r#"{"hooks":[{"event":"preToolUse","command":"lean-ctx hook rewrite"}]}"#;
        let has_correct =
            old_format.contains("\"version\"") && old_format.contains("\"preToolUse\"");
        assert!(
            !has_correct,
            "Old format should be detected as needing migration"
        );
    }

    #[test]
    fn gemini_hook_config_has_type_command() {
        let binary = "lean-ctx";
        let rewrite_cmd = format!("{binary} hook rewrite");
        let redirect_cmd = format!("{binary} hook redirect");

        let hook_config = serde_json::json!({
            "hooks": {
                "BeforeTool": [
                    {
                        "hooks": [{
                            "type": "command",
                            "command": rewrite_cmd
                        }]
                    },
                    {
                        "hooks": [{
                            "type": "command",
                            "command": redirect_cmd
                        }]
                    }
                ]
            }
        });

        let parsed = hook_config;
        let before_tool = parsed["hooks"]["BeforeTool"].as_array().unwrap();
        assert_eq!(before_tool.len(), 2);

        let first_hook = &before_tool[0]["hooks"][0];
        assert_eq!(first_hook["type"], "command");
        assert_eq!(first_hook["command"], "lean-ctx hook rewrite");

        let second_hook = &before_tool[1]["hooks"][0];
        assert_eq!(second_hook["type"], "command");
        assert_eq!(second_hook["command"], "lean-ctx hook redirect");
    }

    #[test]
    fn gemini_hook_old_format_detected() {
        let old_format = r#"{"hooks":{"BeforeTool":[{"command":"lean-ctx hook rewrite"}]}}"#;
        let has_new = old_format.contains("hook rewrite")
            && old_format.contains("hook redirect")
            && old_format.contains("\"type\"");
        assert!(!has_new, "Missing 'type' field should trigger migration");
    }

    #[test]
    fn rewrite_script_uses_registry_pattern() {
        let script = generate_rewrite_script("/usr/bin/lean-ctx");
        assert!(script.contains(r"git\ *"), "script missing git pattern");
        assert!(script.contains(r"cargo\ *"), "script missing cargo pattern");
        assert!(script.contains(r"npm\ *"), "script missing npm pattern");
        assert!(
            !script.contains(r"rg\ *"),
            "script should not contain rg pattern"
        );
        assert!(
            script.contains("LEAN_CTX_BIN=\"/usr/bin/lean-ctx\""),
            "script missing binary path"
        );
    }

    #[test]
    fn compact_rewrite_script_uses_registry_pattern() {
        let script = generate_compact_rewrite_script("/usr/bin/lean-ctx");
        assert!(script.contains(r"git\ *"), "compact script missing git");
        assert!(script.contains(r"cargo\ *"), "compact script missing cargo");
        assert!(
            !script.contains(r"rg\ *"),
            "compact script should not contain rg"
        );
    }

    #[test]
    fn rewrite_scripts_contain_all_registry_commands() {
        let script = generate_rewrite_script("lean-ctx");
        let compact = generate_compact_rewrite_script("lean-ctx");
        for entry in crate::rewrite_registry::REWRITE_COMMANDS {
            if entry.category == crate::rewrite_registry::Category::Search {
                continue;
            }
            let pattern = if entry.command.contains('-') {
                format!("{}*", entry.command.replace('-', r"\-"))
            } else {
                format!(r"{}\ *", entry.command)
            };
            assert!(
                script.contains(&pattern),
                "rewrite_script missing '{}' (pattern: {})",
                entry.command,
                pattern
            );
            assert!(
                compact.contains(&pattern),
                "compact_rewrite_script missing '{}' (pattern: {})",
                entry.command,
                pattern
            );
        }
    }
}