fix: make sqlite-vec optional and fix clippy lint in core

- Made 'sqlite-vec' an optional feature in 'localgpt-core', enabled by default.
- Disabled 'sqlite-vec' in 'localgpt-mobile' to prevent cross-compilation issues.
- Gated vector extension logic in 'index.rs' behind the feature flag.
- Fixed 'clippy::collapsible_if' in 'bridge.rs' using 'Option::filter'.

Author: yiwang

crates/core/Cargo.toml

@@ -8,7 +8,7 @@ description = "Core library for LocalGPT — agent, memory, config, security"
 publish = false
 
 [features]
-default = ["embeddings-local", "claude-cli"]
+default = ["embeddings-local", "claude-cli", "sqlite-vec"]
 # Local embeddings via fastembed (ONNX). Desktop default.
 embeddings-local = ["fastembed"]
 # Claude CLI provider (requires subprocess execution — not available on mobile)
@@ -19,14 +19,16 @@ embeddings-gguf = ["llama-cpp-2"]
 embeddings-openai = []
 # Disable all embeddings — FTS5 keyword search only
 embeddings-none = []
+# Sqlite vector search extension (requires native build, disable for mobile)
+sqlite-vec = ["dep:sqlite-vec"]
 # Legacy alias
 gguf = ["embeddings-gguf"]
 
 [dependencies]
 tokio = { workspace = true }
 reqwest = { workspace = true }
 rusqlite = { workspace = true }
-sqlite-vec = { workspace = true }
+sqlite-vec = { workspace = true, optional = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 serde_yaml = { workspace = true }

crates/core/src/memory/index.rs

@@ -134,6 +134,7 @@ impl MemoryIndex {
     }
 
     /// Try to load sqlite-vec extension
+    #[cfg(feature = "sqlite-vec")]
     #[allow(unsafe_code)]
     fn try_load_sqlite_vec(conn: &Connection) -> bool {
         // sqlite-vec provides the extension as a loadable module
@@ -165,6 +166,11 @@ impl MemoryIndex {
         false
     }
 
+    #[cfg(not(feature = "sqlite-vec"))]
+    fn try_load_sqlite_vec(_conn: &Connection) -> bool {
+        false
+    }
+
     /// Create virtual table for vector search (requires sqlite-vec)
     fn ensure_vec_table(conn: &Connection) -> Result<()> {
         // Create chunks_vec virtual table if sqlite-vec is available

crates/core/src/security/bridge.rs

@@ -187,14 +187,12 @@ impl BridgeManager {
                     #[cfg(unix)]
                     {
                         let current_uid = unsafe { libc::getuid() };
-                        if let Some(peer_uid) = id.uid {
-                            if peer_uid != current_uid {
-                                error!(
-                                    "Rejected connection from UID {} (expected {})",
-                                    peer_uid, current_uid
-                                );
-                                continue;
-                            }
+                        if let Some(peer_uid) = id.uid.filter(|&uid| uid != current_uid) {
+                            error!(
+                                "Rejected connection from UID {} (expected {})",
+                                peer_uid, current_uid
+                            );
+                            continue;
                         }
                     }
                     id