feat: migrate asset-canister sync to v2.2.0 recipe / plugin step

[raymondk]

What & why

dfinity/icp-cli#582 removes the built-in type: assets sync step in icp-cli 1.0.0. Asset uploading moves out of the CLI core into a plugin (or script) sync step — the @dfinity/asset-canister@v2.2.0 recipe supplies a plugin-based step automatically.

Our asset-canister and icp-cli skills pinned the recipe at v2.1.0, which generates the now-removed type: assets step and will break on 1.0.0. Sync plugins are supported since icp-cli 0.2.7, so moving to v2.2.0 now (well ahead of 1.0.0) is the smooth migration path.

Draft: the removal lands in icp-cli 1.0.0, which is not yet released. The migration target — recipe v2.2.0 and the certified-assets sync plugin — is published and works on icp-cli ≥ 0.2.7 today. Holding in draft until we're ready to land.

Changes

skills/asset-canister/SKILL.md

• compatibility: → icp-cli >= 0.2.7
• Recipe example @dfinity/asset-canister@v2.1.0 → v2.2.0
• New Pitfall # 10: type: assets removed in 1.0.0 → use the v2.2.0 recipe (auto plugin step), or a manual type: plugin (certified-assets sync_plugin.wasm + sha256) / type: script step. Recipes ≤ v2.1.0 break on 1.0.0.

skills/icp-cli/SKILL.md (+ references/dfx-migration.md)

• Recipe refs bumped to v2.2.0 (config block, recipes table, Pitfall # 10 example, dfx-migration mapping)
• Sync-phase prose: asset upload is no longer built into the CLI; v2.2.0 recipe supplies the plugin step; legacy type: assets removed in 1.0.0

evaluations/asset-canister.json

• New adversarial case for the removed type: assets step
• Tightened "Asset canister recipe setup" to require v2.2.0+

Evals

asset-canister output evals (with-skill, --no-baseline)

Adversarial: removed type: assets sync step — WITH skill: 4/4 passed
  ✅ Explains that the built-in type: assets sync step is no longer supported / has been removed
  ✅ Recommends the @dfinity/asset-canister@v2.2.0 recipe, which generates a plugin-based sync step automatically
  ✅ If writing a manual sync step, uses type: plugin (with a sync_plugin.wasm url + sha256) or type: script
  ✅ Does NOT reintroduce type: assets in the corrected YAML

Asset canister recipe setup — WITH skill: 4/4 passed
  ✅ Shows icp.yaml with @dfinity/asset-canister recipe pinned to v2.2.0 or later
  ✅ Includes build commands (npm install, npm run build)
  ✅ Specifies the output directory (e.g., dir: dist)
  ✅ Uses icp deploy commands, NOT dfx deploy

🤖 Generated with Claude Code

[github-actions]

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