perf: optimize workspace dependencies for faster builds (#542)

- Remove 100+ unused dependencies identified by cargo-machete
- Upgrade cortex-app-server from axum 0.7 to 0.8 (workspace version)
- Upgrade cortex-lsp to use workspace dependencies (reqwest, tokio, serde, etc.)
- Consolidate tokio versions across feature crates to use workspace reference
- Reduce Cargo.lock by ~1400 lines

Dependency metrics:
- Before: 3958 dependency tree lines
- After: 3257 dependency tree lines (~18% reduction)
- Duplicate packages reduced from 180+ to ~160

Affected crates (54 files changed):
- Core: cortex-cli, cortex-engine, cortex-app-server
- Utils: cortex-utils-git, cortex-utils-string, cortex-utils-pty, cortex-utils-cache, cortex-utils-image
- Features: cortex-plugins, cortex-otel, cortex-sandbox, cortex-execpolicy, cortex-lsp, cortex-core, cortex-commands, cortex-login, cortex-common, cortex-skills, cortex-feedback, cortex-tui, cortex-ghost, cortex-compact, cortex-batch, cortex-review, cortex-resume, cortex-share, cortex-ratelimits, cortex-experimental, cortex-migrations, cortex-linux-sandbox, cortex-windows-sandbox, cortex-shell-snapshot, cortex-exec, cortex-collab, cortex-network-proxy, cortex-mcp-server, cortex-prompt-harness, cortex-protocol, cortex-update, cortex-slack, cortex-tui-capture, cortex-tui-components
- GUI: cortex-gui, cortex-desktop-cli
- OpenTUI: opentui-terminal, opentui-buffer, opentui-layout, opentui-syntax

Author: echobt

Cargo.lock

@@ -8,5 +8,3 @@ description = "Double-buffered terminal rendering for OpenTUI"
 [dependencies]
 opentui-core = { path = "../opentui-core" }
 smallvec = { workspace = true }
-unicode-segmentation = { workspace = true }
-unicode-width = { workspace = true }

opentui-rs/crates/opentui-buffer/Cargo.toml

@@ -6,6 +6,5 @@ license = "MIT"
 description = "Flexbox layout engine for OpenTUI"
 
 [dependencies]
-opentui-core = { path = "../opentui-core" }
 taffy = { workspace = true }
 slotmap = { workspace = true }

opentui-rs/crates/opentui-layout/Cargo.toml

@@ -8,7 +8,6 @@ description = "Syntax highlighting for OpenTUI"
 [dependencies]
 opentui-text = { path = "../opentui-text" }
 tree-sitter = { workspace = true }
-tree-sitter-highlight = { workspace = true }
 streaming-iterator = "0.1"
 ahash = { workspace = true }
 thiserror = { workspace = true }

opentui-rs/crates/opentui-syntax/Cargo.toml

@@ -10,5 +10,3 @@ opentui-core = { path = "../opentui-core" }
 opentui-buffer = { path = "../opentui-buffer" }
 opentui-input = { path = "../opentui-input" }
 crossterm = { workspace = true }
-thiserror = { workspace = true }
-log = { workspace = true }

opentui-rs/crates/opentui-terminal/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 description = "Multi-agent system for Cortex CLI"
 
 [dependencies]
-tokio = { version = "1", features = ["full"] }
+tokio = { workspace = true }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 serde_yaml = "0.9"

src/cortex-agents/Cargo.toml

@@ -23,15 +23,12 @@ cortex-protocol = { path = "../cortex-protocol" }
 cortex-common = { path = "../cortex-common" }
 
 # Web framework
-axum = { version = "0.7", features = ["ws", "multipart", "macros"] }
-axum-extra = { version = "0.9", features = ["typed-header"] }
-tower = { version = "0.4", features = ["full"] }
-tower-http = { version = "0.5", features = ["cors", "trace", "compression-gzip", "limit", "request-id"] }
+axum = { workspace = true }
+tower-http = { workspace = true }
 
 # Async
 tokio = { workspace = true, features = ["full"] }
 tokio-stream = { workspace = true }
-async-trait = { workspace = true }
 futures = { workspace = true }
 async-stream = { workspace = true }
 async-channel = { workspace = true }
@@ -58,18 +55,12 @@ clap = { workspace = true }
 # Utilities
 uuid = { workspace = true }
 chrono = { workspace = true }
-url = { workspace = true }
-bytes = { workspace = true }
 base64 = { workspace = true }
 dirs = "5"
 fs2 = "0.4"  # File locking for concurrent access
 
 # Authentication
 jsonwebtoken = "9"
-argon2 = "0.5"
-
-# Rate limiting
-governor = "0.6"
 
 # File watching
 notify = "6"

src/cortex-app-server/Cargo.toml

@@ -110,7 +110,7 @@ async fn handle_sender(
             }
         };
 
-        if let Err(e) = sender.send(Message::Text(text)).await {
+        if let Err(e) = sender.send(Message::Text(text.into())).await {
             error!("Failed to send message: {}", e);
             break;
         }

src/cortex-app-server/src/websocket.rs

@@ -5,13 +5,11 @@ edition = "2021"
 description = "Batch operations and MultiEdit tools for Cortex CLI"
 
 [dependencies]
-tokio = { version = "1", features = ["full", "fs", "time", "sync"] }
+tokio = { workspace = true, features = ["fs", "time", "sync"] }
 serde = { version = "1", features = ["derive"] }
-serde_json = "1"
 tracing = "0.1"
 thiserror = "1"
 glob = "0.3"
-similar = "2"
 once_cell = "1"
 
 [dev-dependencies]

src/cortex-batch/Cargo.toml

@@ -20,29 +20,26 @@ workspace = true
 default = ["cortex-tui"]
 # Use the new Cortex TUI (120 FPS, Cortex theme)
 cortex-tui = ["dep:cortex-tui"]
-# Enable HTTP transport for MCP server
-mcp-http = ["cortex-mcp-server/http"]
 
 [dependencies]
 cortex-engine = { workspace = true }
 cortex-protocol = { workspace = true }
 cortex-tui = { workspace = true, optional = true }
-cortex-exec = { workspace = true }
+
 cortex-common = { workspace = true, features = ["cli"] }
 cortex-commands = { workspace = true }
 cortex-login = { workspace = true }
 cortex-process-hardening = { workspace = true }
 cortex-app-server = { workspace = true }
 cortex-update = { workspace = true }
-cortex-mcp-server = { workspace = true }
+
 cortex-share = { path = "../cortex-share" }
 cortex-snapshot = { workspace = true }
 cortex-compact = { path = "../cortex-compact" }
 cortex-agents = { workspace = true }
 
 clap = { workspace = true }
 clap_complete = { workspace = true }
-clap_mangen = { workspace = true }
 
 # For colored help output
 color-print = "0.3"
@@ -69,24 +66,12 @@ thiserror = { workspace = true }
 # For upgrade command (HTTP requests) and scrape command (cookie support)
 reqwest = { workspace = true, features = ["json", "cookies"] }
 
-# For upgrade command (archive extraction)
-zip = { workspace = true }
-flate2 = "1.0"
-tar = "0.4"
-
-# For scrape command (HTML parsing and URL handling)
+# For scrape command (HTML parsing)
 scraper = "0.22"
-url = "2.5"
 
 # For agent reference extraction from messages
 regex = { workspace = true }
 
-# For mDNS service discovery
-hostname = { workspace = true }
-
-# For finding binary location in PATH
-which = { workspace = true }
-
 # For Ctrl+C handling and terminal cleanup
 ctrlc = { version = "3.4", features = ["termination"] }