General refactoring and cleanup

[MungoG]

refactoring: thread_pool now inherits from execution_context with executor_type

• Move thread_pool to ex/ namespace (ex/thread_pool.hpp, ex/thread_pool.cpp)
• Derive thread_pool from execution_context for service management
• Add nested executor_type class satisfying capy::executor concept
• Add coro_handler to wrap any_coro for pool execution
• Add work counting with atomic counter in impl
• Add std::optional<task> member to async_run promise_type
• Disable frame_allocator operator new/delete overloads (VFALCO turned off)
• Expand thread_pool tests: executor concept, equality, services, concurrent post
• Update documentation with executor operations and service examples

test: remove frame allocator tests

• Remove tracking_frame_allocator and allocation count tests from task.cpp
• Remove counting_frame_allocator and allocation tests from when_all.cpp
• Remove unused frame_allocator.hpp include from when_all.cpp
• Tests were failing because custom frame allocator operators are disabled

docs: overhaul documentation structure and remove Asio dependencies

• Remove standalone concept pages (6 files) - link to generated API reference instead
• Remove all Asio references, use thread_pool as primary execution context
• Add new Buffers section with 3 pages (index, sequences, dynamic)
• Add Cryptography section with BCrypt password hashing documentation
• Split compression into separate Brotli and ZLib pages
• Add dedicated thread-pool.adoc to Execution section
• Update nav.adoc with reorganized structure
• Revise index.adoc and quick-start.adoc with thread_pool examples
• Update cross-references throughout to use API reference links

feat: add portable error conditions and tests

• add portable error condition enum and category in cond header/source
• document eof portability guidance across read_source and read_stream docs
• extend tests for cond equivalence and adjust gitignore entries

remove unused member

[cppalliance-bot]

An automated preview of the documentation is available at https://62.capy.prtest3.cppalliance.org/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-01-15 17:13:46 UTC