chore: resolve clippy warnings for pre-push audit

nvim-core/src/lib.rs

@@ -1092,11 +1092,12 @@ pub async fn run_mcp_loop(app_name: &str, app_version: &str) {
                                         "properties": {
                                             "action": {
                                                 "type": "string",
-                                                "enum": ["get_active", "read", "open", "create_scratch", "save", "reload", "close", "list", "search", "edit"],
+                                                "enum": ["get_active", "read", "open", "create_scratch", "save", "reload", "close", "list", "search", "edit", "undo", "redo"],
                                                 "description": "Action to perform on the buffer"
                                             },
                                             "file": { "type": "string", "description": "Target file path (for open, read, search)" },
                                             "buf_id": { "type": "integer", "description": "Buffer ID (for close, reload, or split)" },
+                                            "steps": { "type": "integer", "description": "Number of undo/redo steps to apply (default: 1)" },
                                             "content": { "type": "string", "description": "Initial text content (for create_scratch)" },
                                             "name": { "type": "string", "description": "Buffer display name (for create_scratch)" },
                                             "filetype": { "type": "string", "description": "Filetype syntax (for open, create_scratch)" },
@@ -1245,6 +1246,43 @@ pub async fn run_mcp_loop(app_name: &str, app_version: &str) {
                                         },
                                         "required": ["action"]
                                     }
+                                },
+                                {
+                                    "name": "nvim_lsp",
+                                    "description": "Language Server Protocol integration for semantic queries and safe workspace-wide refactoring.",
+                                    "inputSchema": {
+                                        "type": "object",
+                                        "properties": {
+                                            "action": {
+                                                "type": "string",
+                                                "enum": ["rename", "definition", "references", "hover", "code_action"],
+                                                "description": "LSP action to perform"
+                                            },
+                                            "file": { "type": "string", "description": "Target file path" },
+                                            "line": { "type": "integer", "description": "1-indexed line number" },
+                                            "col": { "type": "integer", "description": "0-indexed column number" },
+                                            "new_name": { "type": "string", "description": "New name for rename action" }
+                                        },
+                                        "required": ["action"]
+                                    }
+                                },
+                                {
+                                    "name": "nvim_ast",
+                                    "description": "Tree-sitter AST queries for semantic code exploration and outlining.",
+                                    "inputSchema": {
+                                        "type": "object",
+                                        "properties": {
+                                            "action": {
+                                                "type": "string",
+                                                "enum": ["query", "outline"],
+                                                "description": "AST action to perform"
+                                            },
+                                            "file": { "type": "string", "description": "Target file path" },
+                                            "query": { "type": "string", "description": "Tree-sitter query string" },
+                                            "preset": { "type": "string", "description": "Query preset (e.g., 'functions', 'classes')" }
+                                        },
+                                        "required": ["action"]
+                                    }
                                 }
                             ]
                         })),
@@ -1456,6 +1494,28 @@ pub async fn run_mcp_loop(app_name: &str, app_version: &str) {
                                     execute_nvim_lua_with_args(code, vec![args_rmp])
                                 )
                             }
+                            "undo" | "redo" => {
+                                let is_undo = action == "undo";
+                                let steps = args.get("steps").and_then(|v| v.as_i64()).unwrap_or(1);
+                                let cmd = if is_undo {
+                                    format!("{}u", steps)
+                                } else {
+                                    format!("{}<C-r>", steps)
+                                };
+                                let code = format!(
+                                    "
+                                    local pcall_ok, err = pcall(function()
+                                        vim.cmd('normal! {}')
+                                    end)
+                                    if not pcall_ok then
+                                        error('Failed to {}: ' .. tostring(err))
+                                    end
+                                    return '{} applied {} step(s)'
+                                ",
+                                    cmd, action, action, steps
+                                );
+                                handle_lua_result!(id, execute_nvim_lua(&code));
+                            }
                             "open" => {
                                 let args_rmp = json_to_rmpv(args);
                                 let code = "
@@ -2100,6 +2160,229 @@ pub async fn run_mcp_loop(app_name: &str, app_version: &str) {
                             }
                         },
 
+                        "nvim_lsp" => {
+                            let args_rmp = json_to_rmpv(args);
+                            let lua_code = match action {
+                                "hover" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local params = vim.lsp.util.make_position_params(0)
+                                    params.position.line = (tonumber(args.line) or 1) - 1
+                                    params.position.character = tonumber(args.col) or 0
+                                    params.textDocument.uri = vim.uri_from_bufnr(bufnr)
+                                    local res, err = vim.lsp.buf_request_sync(bufnr, 'textDocument/hover', params, 2000)
+                                    if err or not res then return "Error or timeout" end
+                                    for client_id, response in pairs(res) do
+                                        if response.result and response.result.contents then
+                                            local contents = response.result.contents
+                                            if type(contents) == 'table' and contents.value then return contents.value end
+                                            if type(contents) == 'string' then return contents end
+                                        end
+                                    end
+                                    return "No hover info"
+                                "#
+                                }
+                                "definition" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local params = vim.lsp.util.make_position_params(0)
+                                    params.position.line = (tonumber(args.line) or 1) - 1
+                                    params.position.character = tonumber(args.col) or 0
+                                    params.textDocument.uri = vim.uri_from_bufnr(bufnr)
+                                    local res, err = vim.lsp.buf_request_sync(bufnr, 'textDocument/definition', params, 2000)
+                                    if err or not res then return "Error or timeout" end
+                                    local locations = {}
+                                    for client_id, response in pairs(res) do
+                                        if response.result then
+                                            local res_locs = vim.tbl_islist(response.result) and response.result or {response.result}
+                                            for _, loc in ipairs(res_locs) do
+                                                local uri = loc.uri or loc.targetUri
+                                                local range = loc.range or loc.targetSelectionRange
+                                                table.insert(locations, vim.uri_to_fname(uri) .. ":" .. (range.start.line + 1))
+                                            end
+                                        end
+                                    end
+                                    if #locations == 0 then return "No definition found" end
+                                    return table.concat(locations, "\n")
+                                "#
+                                }
+                                "references" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local params = vim.lsp.util.make_position_params(0)
+                                    params.position.line = (tonumber(args.line) or 1) - 1
+                                    params.position.character = tonumber(args.col) or 0
+                                    params.context = { includeDeclaration = true }
+                                    params.textDocument.uri = vim.uri_from_bufnr(bufnr)
+                                    local res, err = vim.lsp.buf_request_sync(bufnr, 'textDocument/references', params, 5000)
+                                    if err or not res then return "Error or timeout" end
+                                    local locations = {}
+                                    for client_id, response in pairs(res) do
+                                        if response.result then
+                                            for _, loc in ipairs(response.result) do
+                                                table.insert(locations, vim.uri_to_fname(loc.uri) .. ":" .. (loc.range.start.line + 1))
+                                            end
+                                        end
+                                    end
+                                    if #locations == 0 then return "No references found" end
+                                    return table.concat(locations, "\n")
+                                "#
+                                }
+                                "rename" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local new_name = args.new_name
+                                    if not new_name then return "Missing new_name" end
+                                    local params = vim.lsp.util.make_position_params(0)
+                                    params.position.line = (tonumber(args.line) or 1) - 1
+                                    params.position.character = tonumber(args.col) or 0
+                                    params.newName = new_name
+                                    params.textDocument.uri = vim.uri_from_bufnr(bufnr)
+                                    local res, err = vim.lsp.buf_request_sync(bufnr, 'textDocument/rename', params, 2000)
+                                    if err or not res then return "Error or timeout" end
+                                    local applied = false
+                                    for client_id, response in pairs(res) do
+                                        if response.result then
+                                            vim.lsp.util.apply_workspace_edit(response.result, vim.lsp.get_client_by_id(client_id).offset_encoding)
+                                            applied = true
+                                        end
+                                    end
+                                    return applied and "Rename applied" or "No rename edits"
+                                "#
+                                }
+                                "code_action" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local params = vim.lsp.util.make_range_params(0)
+                                    params.position = nil
+                                    params.range.start.line = (tonumber(args.line) or 1) - 1
+                                    params.range.start.character = tonumber(args.col) or 0
+                                    params.range['end'] = params.range.start
+                                    params.context = { diagnostics = vim.lsp.diagnostic.get_line_diagnostics(bufnr, params.range.start.line) }
+                                    params.textDocument.uri = vim.uri_from_bufnr(bufnr)
+                                    local res, err = vim.lsp.buf_request_sync(bufnr, 'textDocument/codeAction', params, 2000)
+                                    if err or not res then return "Error or timeout" end
+                                    
+                                    local actions = {}
+                                    for client_id, response in pairs(res) do
+                                        if response.result then
+                                            for _, action in ipairs(response.result) do
+                                                if action.edit then
+                                                    vim.lsp.util.apply_workspace_edit(action.edit, vim.lsp.get_client_by_id(client_id).offset_encoding)
+                                                    table.insert(actions, "Applied: " .. (action.title or "unnamed"))
+                                                elseif action.command then
+                                                    table.insert(actions, "Found command (not auto-applied): " .. (action.title or "unnamed"))
+                                                end
+                                            end
+                                        end
+                                    end
+                                    if #actions == 0 then return "No code actions available or applied" end
+                                    return table.concat(actions, "\n")
+                                "#
+                                }
+                                _ => "",
+                            };
+
+                            if lua_code.is_empty() {
+                                send_error(
+                                    id,
+                                    -32602,
+                                    &format!("Invalid nvim_lsp action: {}", action),
+                                )
+                                .await;
+                            } else {
+                                handle_lua_result!(
+                                    id,
+                                    execute_nvim_lua_with_args(lua_code, vec![args_rmp])
+                                );
+                            }
+                        }
+
+                        "nvim_ast" => {
+                            let args_rmp = json_to_rmpv(args);
+                            let lua_code = match action {
+                                "query" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local query_str = args.query
+                                    if not query_str then return "Missing query string" end
+                                    local parser = vim.treesitter.get_parser(bufnr)
+                                    if not parser then return "No TS parser for buffer" end
+                                    local tree = parser:parse()[1]
+                                    local root = tree:root()
+                                    local query = vim.treesitter.query.parse(parser:lang(), query_str)
+                                    local results = {}
+                                    for id, node, metadata in query:iter_captures(root, bufnr, 0, -1) do
+                                        local name = query.captures[id]
+                                        local row1, col1, row2, col2 = node:range()
+                                        local text = vim.treesitter.get_node_text(node, bufnr)
+                                        table.insert(results, name .. " at line " .. tostring(row1 + 1) .. ":\n" .. text)
+                                    end
+                                    return table.concat(results, "\n\n")
+                                "#
+                                }
+                                "outline" => {
+                                    r#"
+                                    local args = ...
+                                    local bufnr = vim.fn.bufnr(args.file)
+                                    if bufnr == -1 then return "Buffer not found" end
+                                    local parser = vim.treesitter.get_parser(bufnr)
+                                    if not parser then return "No TS parser for buffer" end
+                                    local tree = parser:parse()[1]
+                                    local root = tree:root()
+                                    local lang = parser:lang()
+                                    
+                                    local q_str = ""
+                                    if lang == "rust" then
+                                        q_str = "(function_item name: (identifier) @name) (impl_item type: (type_identifier) @name) (struct_item name: (type_identifier) @name) (trait_item name: (type_identifier) @name)"
+                                    elseif lang == "python" then
+                                        q_str = "(function_definition name: (identifier) @name) (class_definition name: (identifier) @name)"
+                                    elseif lang == "javascript" or lang == "typescript" then
+                                        q_str = "(function_declaration name: (identifier) @name) (class_declaration name: (identifier) @name) (method_definition name: (property_identifier) @name)"
+                                    else
+                                        return "Outline preset not supported for language: " .. lang
+                                    end
+                                    
+                                    local query = vim.treesitter.query.parse(lang, q_str)
+                                    local results = {}
+                                    for id, node, metadata in query:iter_captures(root, bufnr, 0, -1) do
+                                        local name_text = vim.treesitter.get_node_text(node, bufnr)
+                                        local parent = node:parent()
+                                        local row1, col1, row2, col2 = parent:range()
+                                        table.insert(results, name_text .. " (Line " .. tostring(row1 + 1) .. "-" .. tostring(row2 + 1) .. ")")
+                                    end
+                                    return table.concat(results, "\n")
+                                "#
+                                }
+                                _ => "",
+                            };
+
+                            if lua_code.is_empty() {
+                                send_error(
+                                    id,
+                                    -32602,
+                                    &format!("Invalid nvim_ast action: {}", action),
+                                )
+                                .await;
+                            } else {
+                                handle_lua_result!(
+                                    id,
+                                    execute_nvim_lua_with_args(lua_code, vec![args_rmp])
+                                );
+                            }
+                        }
                         _ => send_error(id, -32601, "Method not found").await,
                     }
                 }
@@ -2268,10 +2551,7 @@ mod tests {
             rmpv_to_json(&rmpv::Value::Integer(42.into())),
             serde_json::json!(42)
         );
-        assert_eq!(
-            rmpv_to_json(&rmpv::Value::F64(3.14)),
-            serde_json::json!(3.14)
-        );
+        assert_eq!(rmpv_to_json(&rmpv::Value::F64(3.5)), serde_json::json!(3.5));
         assert_eq!(
             rmpv_to_json(&rmpv::Value::String("hello".into())),
             serde_json::json!("hello")

server/src/api/ws.rs

@@ -295,10 +295,9 @@ mod tests {
                     .iter()
                     .filter_map(|act_val| {
                         if act_val["category"] == "TASK_EVENT" {
-                            if let Some(details_str) = act_val["details"].as_str() {
-                                if let Ok(event_val) =
-                                    serde_json::from_str::<serde_json::Value>(details_str)
-                                {
+                            let details_str = act_val["details"].as_str()?;
+                            let event_val =
+                                serde_json::from_str::<serde_json::Value>(details_str).ok()?;
                             return Some(
                                 serde_json::json!({
                                     "jsonrpc": "2.0",
@@ -308,8 +307,6 @@ mod tests {
                                 .to_string(),
                             );
                         }
-                            }
-                        }
                         None
                     })
                     .take(5)

server/src/embedding.rs

@@ -193,14 +193,14 @@ fn fallback_embed(text: &str) -> Vec<f32> {
 }
 
 enum EmbeddingModel {
-    Candle(CandleEmbeddingModel),
+    Candle(Box<CandleEmbeddingModel>),
     Fallback,
 }
 
 impl EmbeddingModel {
     fn new() -> Self {
         match CandleEmbeddingModel::new() {
-            Ok(model) => EmbeddingModel::Candle(model),
+            Ok(model) => EmbeddingModel::Candle(Box::new(model)),
             Err(e) => {
                 tracing::warn!(
                     "Failed to initialize Candle BERT model ({e}); falling back to deterministic offline embeddings."

server/src/lib.rs

@@ -808,7 +808,7 @@ mod tests {
 
     #[test]
     fn test_cli_parsing_default() {
-        let cli = Cli::try_parse_from(&["mcp-memory-server"]).unwrap();
+        let cli = Cli::try_parse_from(["mcp-memory-server"]).unwrap();
         assert!(cli.command.is_none());
         assert!(!cli.exit);
         assert!(!cli.restart);
@@ -816,7 +816,7 @@ mod tests {
 
     #[test]
     fn test_cli_parsing_exit_and_target() {
-        let cli = Cli::try_parse_from(&[
+        let cli = Cli::try_parse_from([
             "mcp-memory-server",
             "--exit",
             "--target",
@@ -829,7 +829,7 @@ mod tests {
 
     #[test]
     fn test_cli_parsing_gate_set() {
-        let cli = Cli::try_parse_from(&[
+        let cli = Cli::try_parse_from([
             "mcp-memory-server",
             "gate",
             "set",
@@ -865,7 +865,7 @@ mod tests {
 
     #[test]
     fn test_cli_parsing_gate_verify() {
-        let cli = Cli::try_parse_from(&[
+        let cli = Cli::try_parse_from([
             "mcp-memory-server",
             "gate",
             "verify",
@@ -930,6 +930,7 @@ mod tests {
     }
 
     #[tokio::test]
+    #[allow(clippy::await_holding_lock)]
     async fn test_run_server_graceful_shutdown() {
         let _lock = ENV_LOCK.lock().unwrap_or_else(|e| e.into_inner());
         let temp_dir = tempfile::tempdir().unwrap();

server/src/router.rs

@@ -1398,7 +1398,7 @@ mod tests {
         let handler = MemoryHandler::new(state);
 
         // 1. Verify invalid LLM requests fail gracefully with isError: true or structured response
-        for (tool_name, _tool) in &handler.tools {
+        for tool_name in handler.tools.keys() {
             let invalid_req = json!({
                 "jsonrpc": "2.0",
                 "id": 200,

server/src/state.rs

@@ -1,5 +1,6 @@
 use crate::models::*;
 use crate::search::MemoryIndex;
+pub use crate::search::{SearchResult as UnifiedSearchResult, SearchService};
 use crate::store::Store;
 use std::collections::HashMap;
 use std::path::PathBuf;
@@ -575,5 +576,3 @@ mod tests {
         assert!(activities_updated[0].timestamp >= activities_updated[1].timestamp);
     }
 }
-
-pub use crate::search::{SearchResult as UnifiedSearchResult, SearchService};

server/tests/image_test.rs

@@ -1,7 +1,6 @@
-use image::DynamicImage;
 #[test]
 fn test_img() {
     let mut img = image::DynamicImage::new_rgb8(10, 10);
     img.invert();
-    let img2 = img.adjust_contrast(20.0);
+    let _img2 = img.adjust_contrast(20.0);
 }

server/tests/parity_test.rs

@@ -101,9 +101,10 @@ fn test_dashboard_route_parity() {
     let mut registered_routes = HashSet::new();
     for part in setup_content.split(".route(") {
         let trimmed = part.trim_start();
-        if trimmed.starts_with('"') {
-            if let Some(end_quote) = trimmed[1..].find('"') {
-                let route = &trimmed[1..=end_quote];
+        #[allow(clippy::collapsible_if)]
+        if let Some(stripped) = trimmed.strip_prefix('"') {
+            if let Some(end_quote) = stripped.find('"') {
+                let route = &stripped[..end_quote];
                 registered_routes.insert(route.to_string());
             }
         }
@@ -119,8 +120,10 @@ fn test_dashboard_route_parity() {
         let rest = &dashboard_content[start..];
         let quote_char = dashboard_content[..start].chars().last();
         let mut endpoint = String::new();
+        #[allow(clippy::collapsible_if)]
         if let Some(q) = quote_char {
-            if q == '`' || q == '"' || q == '\'' {
+            let is_quote = q == '`' || q == '"' || q == '\'';
+            if is_quote {
                 if let Some(close_idx) = rest.find(q) {
                     let full_call = &rest[..close_idx];
                     let clean = if let Some(q_idx) = full_call.find('?') {