fix(cli): remove unreachable code and unused Command enum

- Fix duplicate 'i' case in Command.fromString that was unreachable
- Remove unused Command enum entirely (dispatch uses inline comparisons)
- Build verified: zig build --release=fast

cli/src/main.zig

@@ -1,47 +1,6 @@
 const std = @import("std");
 const colors = @import("utils/colors.zig");
 
-// Optimized command dispatch
-const Command = enum {
-    jupyter,
-    init,
-    sync,
-    requeue,
-    queue,
-    status,
-    monitor,
-    cancel,
-    prune,
-    watch,
-    dataset,
-    experiment,
-    validate,
-    info,
-    unknown,
-
-    fn fromString(str: []const u8) Command {
-        if (str.len == 0) return .unknown;
-
-        // Fast path for common commands
-        switch (str[0]) {
-            'j' => if (std.mem.eql(u8, str, "jupyter")) return .jupyter,
-            'i' => if (std.mem.eql(u8, str, "init")) return .init,
-            'i' => if (std.mem.eql(u8, str, "info")) return .info,
-            's' => if (std.mem.eql(u8, str, "sync")) return .sync else if (std.mem.eql(u8, str, "status")) return .status,
-            'q' => if (std.mem.eql(u8, str, "queue")) return .queue,
-            'm' => if (std.mem.eql(u8, str, "monitor")) return .monitor,
-            'c' => if (std.mem.eql(u8, str, "cancel")) return .cancel,
-            'p' => if (std.mem.eql(u8, str, "prune")) return .prune,
-            'w' => if (std.mem.eql(u8, str, "watch")) return .watch,
-            'd' => if (std.mem.eql(u8, str, "dataset")) return .dataset,
-            'e' => if (std.mem.eql(u8, str, "experiment")) return .experiment,
-            'v' => if (std.mem.eql(u8, str, "validate")) return .validate,
-            else => return .unknown,
-        }
-        return .unknown;
-    }
-};
-
 pub fn main() !void {
     // Initialize colors based on environment
     colors.initColors();