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b6397d6877
Every CI run rebuilt all 16 frontend tasks cold -- turbo reported `Remote caching disabled` / `Cached: 0 cached, 16 total` on every run, because only the pnpm store was cached. Persist turbo's filesystem cache with actions/cache instead. No Vercel remote-cache credentials exist in this repo, so this is the local cache keyed per job. Measured, simulating a fresh checkout against a warm cache: frontend-build 54.7s -> 184ms (12/12 cached) frontend-test 115.7s -> 50ms (7/7 cached) Cache footprint is 20MB for the build job and ~60KB for the test job -- `test` declares no outputs, so turbo stores exit codes and logs, yet a hit still skips the most expensive task in the graph. Turning the cache on promotes two latent hashing bugs into real ones, so both are fixed here: `build` declared narrow `inputs` globs that matched neither `content/**/*.mdx` (compiled by fumadocs-mdx during the build), `public/**` assets, nor `package.json` / `tsconfig.json`. Editing any of them left the task hash byte-identical, which is inert when nothing is ever restored and a stale-build bug the moment something is. Dropped in favour of turbo's default input set. `test` regains its `^typecheck` edge, reverting part of the previous commit. That change was justified on the basis that the edge only imposed ordering, which was true without a cache: a turbo task hash covers a workspace dependency's sources only if a task edge reaches them, so with no edge, editing packages/views or packages/ui left `@multica/web#test` and `@multica/desktop#test` unchanged in hash and a cached pass would be replayed over changed code. `typecheck` is the only task every package defines, so it is the edge that closes the gap; `^test` would miss packages/ui, which has no test script. `lint` keeps no edge -- eslint here is not type-aware, so it cannot observe a dependency's sources. Also adds .github/workflows/ci.yml to globalDependencies: it pins the Node version, and without it a toolchain bump would replay results produced by the old runtime behind a green check. Co-authored-by: multica-agent <github@multica.ai>