Implement `bytesIndexOf` foreign function supporting optional start offset for searching byte sequences. Add `serverAcceptBatch` and `serverPendingCount` to net module for batch accepting connections and querying pending queue size. Refactor `stdinFileTimerCallback` to pass read bytes to Wren callback instead of null, with separate handling for EOF. Introduce `coverage_64bit` build config with gcov flags, plus `coverage`, `valgrind`, `clean-coverage`, and `publish` phony targets in Makefile. Fix memory leak in regex by nullifying freed pointers on allocation failure.
Optimize string building in decodeUtf8_, slugify, parseRaw_, processCode_, and processBold_ by accumulating parts in a list and joining once, avoiding repeated string allocation. In HttpResponse constructor, precompute a normalized headers map for O(1) case-insensitive header lookups instead of linear scan. Simplify Json.stringify indent generation using string repetition operator.
Add compiler support for calling async functions directly with `await fn(args)` syntax, automatically translating to `await fn.call(args)`. Introduce `create_merge` Makefile target for merging Wren source files. Include new `apps/generator.wren` source code generator using OpenRouter API, `apps/phonebook.wren` CLI phonebook with SQLite backend, and `apps/minitut.md` Wren tutorial reference. Update `example/await_demo.wren` with parameterized async functions, nested awaits, and expression usage. Fix JSON parsing in `example/openrouter_demo.wren` to strip markdown code fences. Document new await syntax in `manual/api/scheduler.html`.
Add `async` and `await` token support to the Wren compiler with scheduler resolution logic, extend `Num` with `e` constant, hyperbolic trig, base conversion, and new methods (`isZero`, `gcd`, `lcm`, `digits`, etc.), extend `String` with `lower`, `upper`, `capitalize`, `title`, and regenerate `wren_core.wren.inc`. Include `Makefile` for multi-platform builds, rewrite `README.md` with updated build instructions, and add `example/await_demo.wren` and `example/jinja_markdown.wren` demonstrating new features.
Add foreign static methods `create_` and `delete_` to the Directory class in the Wren io module, backed by C implementations using `uv_fs_mkdir` and `uv_fs_rmdir` with proper error handling via `schedulerResumeError`. Refactor existing `Directory.list` and `File.delete` to use the new `Scheduler.await_` helper instead of manually calling `runNextScheduled_`, and rename `ensurePath_` to `ensureString_` for consistency across both classes. Introduce a new test file `create_delete.wren` that validates directory creation, existence checks, and deletion on both POSIX and Windows platforms.
Replace the generic "Do not edit" comment in all five `.wren.inc` files with a
more informative preamble that explicitly names the source `.wren` file and the
`util/wren_to_c_string.py` generator script, and update the script's own
`PREAMBLE` template accordingly.
Add foreign class File with static open, read, size methods and instance methods for close, size, readBytes. Implement async file operations using libuv callbacks that resume fibers on completion. Introduce schedulerResumeError and resumeError_ to propagate I/O errors as fiber errors. Add setExitCode to CLI vm for runtime error exit handling. Bump MAX_METHODS_PER_CLASS from 2 to 9 to accommodate new File methods.
Introduce a new scheduler module with fiber-based cooperative multitasking, including native bindings for resume operations and a Wren class for scheduling callables. Refactor the existing timer module and CLI code to use a centralized built-in module registry in modules.c, replacing direct includes of timer.h and timer.wren.inc. Update Xcode project and Makefile to compile the new scheduler.c, modules.c, and their generated .wren.inc sources.
