Replace local detect-runner-os action with external detect-versions@v1 to
reduce custom action maintenance. Add architecture detection for future
cross-platform support and namespace all cache keys with "continuwuity-"
prefix to prevent collisions with other projects on shared runners.
Updates cache mount IDs in Dockerfiles to match the new namespacing
convention, ensuring consistent cache isolation across CI and Docker builds.
Runner images have migrated from /usr/share/rust/.cargo/bin to standard
~/.cargo/bin location. Action now checks old location first and migrates
binaries if found, maintaining compatibility with both paths.
Bump cache key to v3 to ensure fresh binary cache after path changes.
Matrix jobs stopped starting after upgrading from runner v9 to v11 due to
changes in job dependency resolution. Remove redundant define-variables job
that computed static image paths and replace with IMAGE_PATH environment
variable.
Also fix timelord action binary caching for compatibility between different
runner images that install cargo binaries in different locations.
Updates the timelord action to fall back to git-warp-time when the cache
is completely empty, enabling timestamp restoration even on fresh builds.
When git-warp-time is used, performs an unshallow fetch to get full history,
while subsequent runs use normal fetches. Simplifies the interface by making
inputs optional with sensible defaults.
Adds binary caching for timelord-cli and git-warp-time tools to avoid
repeated installations, and updates paths to use /usr/share/rust/.cargo/bin/
for the catthehacker runner image used by the dind profile (may need updating
if/when switching to standard image).
The main timelord restore now happens inside the Dockerfile itself, as Docker
intentionally wipes all file mtimes on COPY/ADD operations.
