Move webui node_modules hoisting checks to CI workflow

[coderabbitai]

Context

Currently, the webui-node-modules task in taskfile.yaml performs hoisting assertions at build time using test ! -d checks to verify that npm has fully hoisted all workspace packages to the root node_modules directory (lines 382-383):

- for: ["client", "common", "server"]
  cmd: "test ! -d '{{.G_WEBUI_SRC_DIR}}/{{.ITEM}}/node_modules'"

These assertions ensure that peer dependency conflicts haven't forced npm to create per-workspace node_modules directories.

Proposed Enhancement

Move these hoisting verification checks into a separate dep:lock task that runs in a CI workflow, similar to the existing Rust Cargo.lock verification (see deps:lock:check-rust task and the clp-rust-checks workflow).

Benefits

• Separates deterministic dependency validation from project build steps
• Aligns with the existing pattern established for Rust dependency lock verification
• Keeps CI workflows focused on validation tasks
• Avoids unnecessary checks during local development builds

References

• PR build(deps): Bump go-task to 3.48.0 (fixes #1352); Fix webui dependency hoisting conflicts. #1994: build(deps): Bump go-task to 3.48.0 (fixes #1352); Fix webui dependency hoisting conflicts. #1994
• Original discussion: build(deps): Bump go-task to 3.48.0 (fixes #1352); Fix webui dependency hoisting conflicts. #1994 (comment)
• Requested by: @junhaoliao