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
//! Project-local `.lean-ctx.toml` merge logic, extracted from `mod.rs` (#660).
//!
//! `merge_local` overlays a per-project config onto the global config, respecting
//! workspace trust boundaries: untrusted repos cannot weaken security-sensitive
//! settings (path-jail, shell allowlist, proxy upstream, etc.).
#[allow(clippy::wildcard_imports)]
use super::*;
impl Config {
/// Merge a project-local `.lean-ctx.toml` onto `self`.
///
/// `trusted` reflects [`crate::core::workspace_trust`]: when `false`, the
/// security-sensitive overrides (shell allowlist, path-jail widening, proxy
/// upstream, command aliases, rules scope, ...) are withheld and a warning is
/// emitted — comfort-only overrides (compression, theme, memory tuning) still
/// apply. This stops a cloned, untrusted repo from silently weakening
/// lean-ctx's own boundaries through its bundled config (security audit #4).
pub(super) fn merge_local(&mut self, local_toml: &str, trusted: bool) {
let mut local: Config = match toml::from_str(local_toml) {
Ok(c) => c,
Err(e) => {
tracing::warn!("local config parse error: {e}");
eprintln!(
"\x1b[33m[lean-ctx] WARNING: local .lean-ctx.toml parse error: {e}\n \
Local overrides skipped.\x1b[0m"
);
return;
}
};
if !trusted {
let withheld = strip_sensitive_overrides(&mut local);
if !withheld.is_empty() {
tracing::warn!(
"[SECURITY] untrusted workspace: ignoring {} security-sensitive \
.lean-ctx.toml override(s): {} — run `lean-ctx trust` to apply them",
withheld.len(),
withheld.join(", ")
);
}
}
if local.ultra_compact {
self.ultra_compact = true;
}
if local.tee_mode != TeeMode::default() {
self.tee_mode = local.tee_mode;
}
if local.recovery_hints != RecoveryHints::default() {
self.recovery_hints = local.recovery_hints;
}
if local.output_density != OutputDensity::default() {
self.output_density = local.output_density;
}
if local.checkpoint_interval != 15 {
self.checkpoint_interval = local.checkpoint_interval;
}
if !local.excluded_commands.is_empty() {
self.excluded_commands.extend(local.excluded_commands);
}
if !local.passthrough_urls.is_empty() {
self.passthrough_urls.extend(local.passthrough_urls);
}
if !local.custom_aliases.is_empty() {
self.custom_aliases.extend(local.custom_aliases);
}
// Additive merge with dedup: project-local config can add formats on top
// of the global default (`["toon"]`) without re-listing it.
for fmt in local.preserve_compact_formats {
if !self
.preserve_compact_formats
.iter()
.any(|f| f.eq_ignore_ascii_case(&fmt))
{
self.preserve_compact_formats.push(fmt);
}
}
if local.slow_command_threshold_ms != 5000 {
self.slow_command_threshold_ms = local.slow_command_threshold_ms;
}
if local.theme != "default" {
self.theme = local.theme;
}
if !local.buddy_enabled {
self.buddy_enabled = false;
}
if !local.enable_wakeup_ctx {
self.enable_wakeup_ctx = false;
}
if !local.redirect_exclude.is_empty() {
self.redirect_exclude.extend(local.redirect_exclude);
}
if !local.disabled_tools.is_empty() {
self.disabled_tools.extend(local.disabled_tools);
}
if local.prefer_native_editor {
self.prefer_native_editor = true;
}
if !local.extra_ignore_patterns.is_empty() {
self.extra_ignore_patterns
.extend(local.extra_ignore_patterns);
}
// Index filters (#735): repo-local excludes extend the global list; a
// repo-local include set (the stricter, corpus-defining axis) replaces
// the global one; gitignore handling can only be switched off locally
// (same only-tighten pattern as the bool flags above).
if !local.index.exclude.is_empty() {
self.index.exclude.extend(local.index.exclude);
}
if !local.index.include.is_empty() {
self.index.include = local.index.include;
}
if !local.index.respect_gitignore {
self.index.respect_gitignore = false;
}
if local.rules_scope.is_some() {
self.rules_scope = local.rules_scope;
}
if local.rules_injection.is_some() {
self.rules_injection = local.rules_injection;
}
if local.permission_inheritance.is_some() {
self.permission_inheritance = local.permission_inheritance;
}
if local.proxy.anthropic_upstream.is_some() {
self.proxy.anthropic_upstream = local.proxy.anthropic_upstream;
}
if local.proxy.openai_upstream.is_some() {
self.proxy.openai_upstream = local.proxy.openai_upstream;
}
if local.proxy.chatgpt_upstream.is_some() {
self.proxy.chatgpt_upstream = local.proxy.chatgpt_upstream;
}
if local.proxy.gemini_upstream.is_some() {
self.proxy.gemini_upstream = local.proxy.gemini_upstream;
}
if !local.autonomy.enabled {
self.autonomy.enabled = false;
}
if !local.autonomy.auto_preload {
self.autonomy.auto_preload = false;
}
if !local.autonomy.auto_dedup {
self.autonomy.auto_dedup = false;
}
if !local.autonomy.auto_related {
self.autonomy.auto_related = false;
}
if !local.autonomy.auto_consolidate {
self.autonomy.auto_consolidate = false;
}
if local.autonomy.silent_preload {
self.autonomy.silent_preload = true;
}
if !local.autonomy.silent_preload && self.autonomy.silent_preload {
self.autonomy.silent_preload = false;
}
if local.autonomy.dedup_threshold != AutonomyConfig::default().dedup_threshold {
self.autonomy.dedup_threshold = local.autonomy.dedup_threshold;
}
if local.autonomy.consolidate_every_calls
!= AutonomyConfig::default().consolidate_every_calls
{
self.autonomy.consolidate_every_calls = local.autonomy.consolidate_every_calls;
}
if local.autonomy.consolidate_cooldown_secs
!= AutonomyConfig::default().consolidate_cooldown_secs
{
self.autonomy.consolidate_cooldown_secs = local.autonomy.consolidate_cooldown_secs;
}
if !local.autonomy.cognition_loop_enabled {
self.autonomy.cognition_loop_enabled = false;
}
if local.autonomy.cognition_loop_interval_secs
!= AutonomyConfig::default().cognition_loop_interval_secs
{
self.autonomy.cognition_loop_interval_secs =
local.autonomy.cognition_loop_interval_secs;
}
if local.autonomy.cognition_loop_max_steps
!= AutonomyConfig::default().cognition_loop_max_steps
{
self.autonomy.cognition_loop_max_steps = local.autonomy.cognition_loop_max_steps;
}
if local_toml.contains("compression_level") {
self.compression_level = local.compression_level;
}
if local_toml.contains("compression_aggressiveness") {
self.compression_aggressiveness = local.compression_aggressiveness;
}
if local_toml.contains("terse_agent") {
self.terse_agent = local.terse_agent;
}
if !local.archive.enabled {
self.archive.enabled = false;
}
if local.archive.threshold_chars != ArchiveConfig::default().threshold_chars {
self.archive.threshold_chars = local.archive.threshold_chars;
}
if local.archive.max_age_hours != ArchiveConfig::default().max_age_hours {
self.archive.max_age_hours = local.archive.max_age_hours;
}
if local.archive.max_disk_mb != ArchiveConfig::default().max_disk_mb {
self.archive.max_disk_mb = local.archive.max_disk_mb;
}
if !local.archive.ephemeral {
self.archive.ephemeral = false;
}
if local.archive.ephemeral_min_tokens != ArchiveConfig::default().ephemeral_min_tokens {
self.archive.ephemeral_min_tokens = local.archive.ephemeral_min_tokens;
}
let mem_def = MemoryPolicy::default();
if local.memory.knowledge.max_facts != mem_def.knowledge.max_facts {
self.memory.knowledge.max_facts = local.memory.knowledge.max_facts;
}
if local.memory.knowledge.max_patterns != mem_def.knowledge.max_patterns {
self.memory.knowledge.max_patterns = local.memory.knowledge.max_patterns;
}
if local.memory.knowledge.max_history != mem_def.knowledge.max_history {
self.memory.knowledge.max_history = local.memory.knowledge.max_history;
}
if local.memory.knowledge.contradiction_threshold
!= mem_def.knowledge.contradiction_threshold
{
self.memory.knowledge.contradiction_threshold =
local.memory.knowledge.contradiction_threshold;
}
if local.memory.episodic.max_episodes != mem_def.episodic.max_episodes {
self.memory.episodic.max_episodes = local.memory.episodic.max_episodes;
}
if local.memory.episodic.max_actions_per_episode != mem_def.episodic.max_actions_per_episode
{
self.memory.episodic.max_actions_per_episode =
local.memory.episodic.max_actions_per_episode;
}
if local.memory.episodic.summary_max_chars != mem_def.episodic.summary_max_chars {
self.memory.episodic.summary_max_chars = local.memory.episodic.summary_max_chars;
}
if local.memory.procedural.min_repetitions != mem_def.procedural.min_repetitions {
self.memory.procedural.min_repetitions = local.memory.procedural.min_repetitions;
}
if local.memory.procedural.min_sequence_len != mem_def.procedural.min_sequence_len {
self.memory.procedural.min_sequence_len = local.memory.procedural.min_sequence_len;
}
if local.memory.procedural.max_procedures != mem_def.procedural.max_procedures {
self.memory.procedural.max_procedures = local.memory.procedural.max_procedures;
}
if local.memory.procedural.max_window_size != mem_def.procedural.max_window_size {
self.memory.procedural.max_window_size = local.memory.procedural.max_window_size;
}
if local.memory.lifecycle.decay_rate != mem_def.lifecycle.decay_rate {
self.memory.lifecycle.decay_rate = local.memory.lifecycle.decay_rate;
}
if local.memory.lifecycle.low_confidence_threshold
!= mem_def.lifecycle.low_confidence_threshold
{
self.memory.lifecycle.low_confidence_threshold =
local.memory.lifecycle.low_confidence_threshold;
}
if local.memory.lifecycle.stale_days != mem_def.lifecycle.stale_days {
self.memory.lifecycle.stale_days = local.memory.lifecycle.stale_days;
}
if local.memory.lifecycle.similarity_threshold != mem_def.lifecycle.similarity_threshold {
self.memory.lifecycle.similarity_threshold =
local.memory.lifecycle.similarity_threshold;
}
if local.memory.lifecycle.reclaim_headroom_pct != mem_def.lifecycle.reclaim_headroom_pct {
self.memory.lifecycle.reclaim_headroom_pct =
local.memory.lifecycle.reclaim_headroom_pct;
}
if local.memory.lifecycle.reclaim_enabled != mem_def.lifecycle.reclaim_enabled {
self.memory.lifecycle.reclaim_enabled = local.memory.lifecycle.reclaim_enabled;
}
if local.memory.embeddings.max_facts != mem_def.embeddings.max_facts {
self.memory.embeddings.max_facts = local.memory.embeddings.max_facts;
}
if !local.allow_paths.is_empty() {
self.allow_paths.extend(local.allow_paths);
}
if !local.extra_roots.is_empty() {
self.extra_roots.extend(local.extra_roots);
}
// Project-local config may only ADD read-only roots (tighten the write
// boundary), never remove them — merge mirrors extra_roots (#475).
if !local.read_only_roots.is_empty() {
self.read_only_roots.extend(local.read_only_roots);
}
// Symlink write-through roots (#596) follow extra_roots: a *trusted*
// workspace may add roots, an untrusted one is stripped above.
if !local.allow_symlink_roots.is_empty() {
self.allow_symlink_roots.extend(local.allow_symlink_roots);
}
if local.minimal_overhead {
self.minimal_overhead = true;
}
if local.shell_hook_disabled {
self.shell_hook_disabled = true;
}
if local.skip_agent_aliases {
self.skip_agent_aliases = true;
}
if local.shell_activation != ShellActivation::default() {
self.shell_activation = local.shell_activation.clone();
}
if local.read_redirect != ReadRedirect::default() {
self.read_redirect = local.read_redirect;
}
if local.read_dedup != ReadDedup::default() {
self.read_dedup = local.read_dedup;
}
if local.bm25_max_cache_mb != default_bm25_max_cache_mb() {
self.bm25_max_cache_mb = local.bm25_max_cache_mb;
}
if local.memory_profile != MemoryProfile::default() {
self.memory_profile = local.memory_profile;
}
if local.memory_cleanup != MemoryCleanup::default() {
self.memory_cleanup = local.memory_cleanup;
}
// Only override when the local file actually defines `shell_allowlist`.
// The field carries `#[serde(default = "default_shell_allowlist")]`, so a
// local `.lean-ctx.toml` that omits the key still deserializes to the full
// 201-entry built-in list — an `is_empty()` guard would then silently clobber
// a deliberately shorter global allowlist with the defaults. Comparing against
// the default (the same pattern used for every other merged field) treats
// "omitted" as "no override".
if local.shell_allowlist != default_shell_allowlist() {
self.shell_allowlist = local.shell_allowlist;
}
if !local.shell_allowlist_extra.is_empty() {
self.shell_allowlist_extra
.extend(local.shell_allowlist_extra);
}
if !local.default_tool_categories.is_empty() {
self.default_tool_categories = local.default_tool_categories;
}
if local.tool_profile.is_some() {
self.tool_profile = local.tool_profile;
}
if !local.tools_enabled.is_empty() {
self.tools_enabled = local.tools_enabled;
}
if local.no_degrade {
self.no_degrade = true;
}
if local.delta_explicit {
self.delta_explicit = true;
}
if local.profile.is_some() {
self.profile = local.profile;
}
if local.proxy_timeout_ms.is_some() {
self.proxy_timeout_ms = local.proxy_timeout_ms;
}
}
}