copy_src_tree is always mocked in the writer tests, so the new
missing/stale/unreadable debug branches were unreachable; the decision
moves into _build_info_stale with a test covering every branch.
voluptuous fills schema defaults in set-iteration order, so the
validated dict's key order changes with the process hash seed; the
unsorted dump churned the comment block in main.cpp and relinked the
firmware on every esphome run for any config using a defaults-heavy
action (logger.log in a button's on_press was enough). Affects the
PlatformIO path identically.
Every sources_changed site now logs which file (or which build-info
staleness) triggered it, so a config that relinks on every run can be
diagnosed from one -v compile instead of diffing the build tree.
The walk now drains its frontier, prefetches the wave's registry
archives with a small thread pool (deduped by URL, progress bars
suppressed per thread since parallel bars would interleave), and then
processes the wave sequentially; the sequential download() call stays
authoritative so failures surface with resume exactly as before. Same
approach as the espidf tool prefetch in #18513.
The typed IncompatiblePlatform exception, dependency_is_usable,
warn_properties_depends, the lex_build_flags helper (espidf switches to
it), the normalize_dependencies validation, the manifest shape check,
the component-level drop-warning split, and the SCons case-sensitive
.C/.C++ suffixes all harden the shared converter independently of the
arduino backend, so they belong in this PR; the provides hook and the
version-less reconciliation stay with the backend that needs them.
The switch from cyw43_tcpip_link_status to cyw43_wifi_link_status
was intended for 2026.3.0 alongside the arduino-pico 5.5.0 framework
update but was accidentally included in 2026.2.3.
With the old framework (3.9.4), cyw43_wifi_link_status never returns
CYW43_LINK_UP, so the CONNECTED state is unreachable. The device
connects to WiFi but the status stays at CONNECTING until timeout,
causing a connect/disconnect loop.
Fixes https://github.com/esphome/esphome/issues/14422
J. Nick Koston