chore: update vendored Effect source

[pullfrog]

Summary

Updated vendored Effect source to the latest upstream commit.

Changes

This PR updates the vendored Effect repository at repos/effect/ by pulling in the latest changes from the upstream Effect repository.

Key changes include:

• 83 files changed with 17,224 insertions and 9,704 deletions
• Updates across multiple Effect packages (ai, cli, cluster, effect, platform, workflow)
• New test files and type definitions
• Various bug fixes and improvements from the Effect team

Notes

• This is a read-only vendored copy for API reference and usage examples
• The vendored source should not be modified directly
• To update further, run: git subtree pull --prefix=repos/effect https://github.com/Effect-TS/effect.git main --squash

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[pullfrog]

Diagnosis: CI failure is pre-existing and unrelated to this PR. The Build step fails because elm-pages build in apps/docs tries to fetch lamdera/codecs/1.0.0/elm.json from static.lamdera.com and gets a ResponseTimeout — the Lamdera package registry is unreachable from this CI runner. No files were changed by this PR (diff is empty after the vendored source sync to main), so no fix is applicable here.

Task list (4/7 completed)

• Checkout PR branch
• Fetch check suite logs to diagnose failure
• Verify failure was introduced by this PR
• Diagnose and fix the issue
• Verify fix with pnpm test and pnpm lint
• Commit and push changes
• Report progress

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[pullfrog]

No upstream changes since last sync — the vendored Effect source is already current. Closing without action.

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[pullfrog]

CI failure diagnosis

The failing step is packages/devtools-ui build (Elm UI build), which errors with:

-- PROBLEM BUILDING DEPENDENCIES -----------------------------------------------
I ran into a compilation error when trying to build the following package:
    elm/core 1.0.5

This is unrelated to the vendored Effect update in this PR — the PR only touches files under repos/effect/. The packages/devtools-ui/ directory has zero changes.

I verified the devtools-ui build passes locally:

Starting downloads...
  ● elm/core 1.0.5
  ...
Dependencies ready!
Success! Compiled 13 modules.
devtools-ui build complete.

The CI failure was a transient download/compilation error for elm/core 1.0.5 from the Elm package registry. This is a CI environment flake, not a code issue.

Recommended action: Re-run the CI workflow (no code changes needed).

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[pullfrog]

Diagnosis: CI failure is unrelated to PR #67. The "Build" step failed on apps/docs (elm-pages build) with a transient HTTP ResponseTimeout while downloading dillonkearns/elm-markdown 7.0.1 from GitHub. All 66 changed files are confined to repos/effect/ — nothing modifies the docs site or any other project package. No code fix is required. Please retry the workflow.

Task list (5/6 completed)

• Checkout PR chore: update vendored Effect source #67 branch
• Fetch check suite logs to understand failure
• Verify failure was introduced by this PR
• Diagnose and fix the issue
• Commit and push the fix
• Report progress

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[pullfrog]

This run croaked 😵

The workflow encountered an error before any progress could be reported. Please check the link below for details.

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