chore: deprecate @vlandoss/biome-config, localproxy, starter

[rqbazan]

Summary

Final-pass deprecation for three packages, paving the way to remove their source from the monorepo in a follow-up PR.

• @vlandoss/biome-config → superseded by @vlandoss/config (use @vlandoss/config/biome). Caution note already in README.
• @vlandoss/localproxy → superseded by Portless. Caution note added in this PR.
• @vlandoss/starter → superseded by @vlandoss/vland. Caution note already in README; bumping a patch so the deprecation note ships under the latest tag.

Each package's homepage is repinned to its upcoming tag URL so the deprecation README stays reachable on npm even after the source dirs are removed:

• @vlandoss/biome-config@0.0.9 → tree/%40vlandoss%2Fbiome-config%400.0.9/dotfiles/biome-config#readme
• @vlandoss/localproxy@0.2.3 → tree/%40vlandoss%2Flocalproxy%400.2.3/packages/localproxy#readme
• @vlandoss/starter@0.4.2 → tree/%40vlandoss%2Fstarter%400.4.2/packages/starter#readme

After merge

1. Bot opens "chore: update versions" PR → merge it → CI runs pnpm changeset publish → tags @vlandoss/<pkg>@<ver> get created → homepage URLs resolve.
2. Run npm deprecate × 3:

npm deprecate @vlandoss/biome-config "*" "Deprecated. Use @vlandoss/config/biome instead. See https://github.com/variableland/dx/tree/%40vlandoss%2Fbiome-config%400.0.9/dotfiles/biome-config#readme"
npm deprecate @vlandoss/localproxy "*" "Deprecated. Use Portless instead: https://port1355.dev. See https://github.com/variableland/dx/tree/%40vlandoss%2Flocalproxy%400.2.3/packages/localproxy#readme"
npm deprecate @vlandoss/starter "*" "Deprecated. Use @vlandoss/vland instead. See https://github.com/variableland/dx/tree/%40vlandoss%2Fstarter%400.4.2/packages/starter#readme"

3. A separate PR removes the source for the three packages (already prepared locally on chore/remove-deprecated-packages; opens once this lands).

Test plan

• Bot opens the Version PR and bumps biome-config 0.0.8 → 0.0.9, localproxy 0.2.2 → 0.2.3, starter 0.4.1 → 0.4.2
• After Version PR merges, npm view @vlandoss/<pkg> version shows the new version under latest
• After publish, git tag -l '@vlandoss/<pkg>@<ver>' shows each tag exists
• Homepage URLs in npm UI resolve to a tagged tree on GitHub showing the caution note
• After npm deprecate, npm view @vlandoss/<pkg> deprecated returns the message

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 257ce54

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@vlandoss/biome-config	Patch
@vlandoss/localproxy	Patch
@vlandoss/starter	Patch

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