fix(web): keep annotation actions attached to dialog

[lastobelus]

The annotation editor's action footer could detach from the dialog because a form wrapper interrupted the shared dialog's direct-child flex layout.

This keeps the shared header, scrolling panel, and footer as direct dialog children. The form now lives inside the panel, and the footer submit button targets it by ID, preserving Enter/submit behavior while restoring the standard modal layout.

Validation:

• focused annotation component tests (2/2)
• web typecheck
• targeted lint and formatting
• quick local CI (all workspace typechecks and tests)
• integrated Safari QA against an isolated production build

Built by GPT-5.6-Sol with the Codex harness.

Before (installed nightly):

After (fixed):

@codex review

Codex Review: Didn't find any major issues. Delightful!

Reviewed commit: d1b387192a

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@codex review

Codex Review: Didn't find any major issues. Chef's kiss.

Reviewed commit: d3784f5aeb

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".