fix: update to Zig 0.16-dev APIs

- Replace std.time.timestamp() with std.Io.Timestamp.now(io, .real).toSeconds()
- Auto-format files for 0.16-dev zig fmt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: chrisbbreuer

src/files.zig

@@ -38,7 +38,7 @@ pub const FileType = enum {
 
     pub fn isTomlFile(self: FileType) bool {
         return self == .cargo_toml or self == .pyproject_toml or
-               self == .ion_toml or self == .generic_toml;
+            self == .ion_toml or self == .generic_toml;
     }
 };
 
@@ -214,8 +214,8 @@ fn findVersionInText(allocator: Allocator, content: []const u8) !?[]u8 {
     // Look for semantic version patterns in text
     // Pattern: \bX.Y.Z\b (word boundaries)
     const semver_pattern = std.mem.indexOf(u8, content, "0.") orelse
-                           std.mem.indexOf(u8, content, "1.") orelse
-                           return null;
+        std.mem.indexOf(u8, content, "1.") orelse
+        return null;
 
     // Extract the version starting from this position
     var end = semver_pattern;

src/main.zig

@@ -321,8 +321,7 @@ fn generateChangelog(allocator: std.mem.Allocator, io: std.Io, version: []const
     };
     defer allocator.free(existing_content);
 
-    const ts = std.posix.clock_gettime(std.posix.CLOCK.REALTIME) catch unreachable;
-    const epoch_seconds = ts.sec;
+    const epoch_seconds = std.Io.Timestamp.now(io, .real).toSeconds();
     const days_since_epoch = @divFloor(epoch_seconds, 86400);
     const days_since_1970 = days_since_epoch;
 

src/test_version.zig

@@ -25,7 +25,7 @@ fn bumpVersion(allocator: std.mem.Allocator, version: []const u8, release_type:
         return error.InvalidReleaseType;
     }
 
-    return try std.fmt.allocPrint(allocator, "{d}.{d}.{d}", .{parts[0], parts[1], parts[2]});
+    return try std.fmt.allocPrint(allocator, "{d}.{d}.{d}", .{ parts[0], parts[1], parts[2] });
 }
 
 fn findVersion(allocator: std.mem.Allocator, content: []const u8) !?[]u8 {