chore: bump pinned rainix to latest main

[thedavidmeister]

Closes #2575.

What

• Pins `rainix` flake input at `d444279bc7` (latest `rainlanguage/rainix` main as of 2026-05-19).
• Removes `prettier`, `prettier-plugin-svelte`, `prettier-plugin-tailwindcss` from root `package.json`; regenerates `package-lock.json` to drop the corresponding entries.

Why now

The `rainix` pin was at `f3bdb28f` (2024-05-03) — about 2 years stale. Picks up:

• flake: skip npm ci in default shell when lockfile already installed rainix#176 — skip `npm ci` on shell entry when the lockfile is already in sync. Eliminates the multi-second wait every `nix develop --command …` triggers in this repo.
• feat(rust-shell): include foundry-bin for anvil-based tests rainix#172 — `foundry-bin` in `rust-shell` (anvil for tests)
• chore: bump nixpkgs + add cargo-expand to rust-build-inputs rainix#166 — `cargo-expand` on PATH
• chore: drop wasm-bindgen-cli pin to 0.2.100 rainix#165 — drop `wasm-bindgen-cli` pin
• feat(ci): upstream rainix-rs-wasm-test reusable rainix#164 — upstream `rainix-rs-wasm-test` reusable workflow
• chore: remove tauri shell and related plumbing rainix#159 — remove tauri shell

The bumped rainix supplies prettier via its pre-commit hook bundle and adds a `no-consumer-prettier` hook that forbids prettier deps in consumer `package.json`. That's why the prettier cleanup is bundled in this same PR — bumping rainix without it would fail the new lint hook on every consumer.

Implementation notes

`nix flake update` wouldn't land on the latest rainix commit even with `--refresh` and `--option tarball-ttl 0` (nix 2.18.1 fetcher cache stickiness on `github:rainlanguage/rainix` HEAD lookups). `flake.lock` was hand-edited to set `rev` + `narHash` + `lastModified` for the rainix node after a full `nix flake update` to surface the new transitive inputs (notably `git-hooks-nix`).

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Removed development formatting toolchain dependencies.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 832ef5a2-2207-48c2-bc06-995175fb2f2a

📥 Commits

Reviewing files that changed from the base of the PR and between 5054ade and ca1ec61.

⛔ Files ignored due to path filters (2)

• flake.lock is excluded by !**/*.lock
• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (1)

• package.json

---

📝 Walkthrough

Walkthrough

The devDependencies section of package.json is updated to remove the Prettier code formatter and its Svelte and Tailwind CSS plugins. All other project configuration and dependency declarations remain unchanged.

Changes

Prettier Toolchain Removal

Layer / File(s)	Summary
Remove Prettier and plugins from devDependencies package.json	The prettier, prettier-plugin-svelte, and prettier-plugin-tailwindcss packages are deleted from devDependencies; surrounding dependency entries are reordered or remain unchanged.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A world without semicolon rules to fight,
No plugin wars or formatting might,
The code flows free in its natural way,
Prettier's gone—let's code today! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 3

❌ Failed checks (3 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The PR title mentions bumping rainix, but the actual changes show package.json Prettier dependency removals with no visible flake.lock updates in the raw summary.	Clarify whether flake.lock was updated as expected for the rainix bump, or if the title should reflect the Prettier removal focus.
Linked Issues check	❓ Inconclusive	The PR removes Prettier deps as required by the new rainix's lint hook, but the raw summary lacks evidence of the primary flake.lock rainix update from f3bdb28f to d444279b.	Verify that flake.lock was updated with the new rainix revision and related changes, as described in issue #2575.
Out of Scope Changes check	❓ Inconclusive	Removing Prettier dependencies aligns with the PR objectives (required by new rainix's no-consumer-prettier hook), but the raw summary does not show flake.lock changes that were the primary scope of issue #2575.	Confirm that all flake.lock changes related to the rainix bump are present in the PR, as the raw summary only documents package.json modifications.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 2026-05-20-bump-rainix

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