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Oleg Isonen 9a8ae2dc8f feat: Customize Form progress feedback (#6606)
Closes #6605

New Forms show editable feedback while Resource actions run. The
`formProgress` variable starts with `status: "idle"`, `loaded: 0`,
`total: 0`, and `files: []`. It becomes pending during submission, then
returns to idle. The existing `formState` still reports only initial,
success, or error.

The Progress container says “Submitting…” and adds measured
whole-request bytes when the total is known. Files include ID, field
name, name, size, and type. The browser cannot measure reliable per-file
transfer bytes in the single multipart request. The binding editor
suggests one example file to reveal those fields; the example never
enters the actual Form value. Saved Forms retain their existing bindings
and submission message.

## Checklist

- [x] Keep the existing Form outcome variable and add upload activity,
byte counts, and file details.
- [x] Show zero byte defaults on insertion, new submissions,
cancellation, and Preview reset without fake runtime files.
- [x] Suggest file fields in Form and Resource bindings while
evaluation, reset, rendering, and stored values use real data.
- [x] Preserve Builder Preview headers, authentication, response checks,
and cancellation.
- [x] Keep existing success/error feedback and saved-Form fallback.
- [x] Reset external progress when an active published Form unmounts.
- [x] Update Form, Variables, and MCP/CLI guides; clarify the older
screenshot and final-only simulation. Generated MCP docs check passes.
- [x] Audit Form and Variables docs against final progress behavior;
clarify the older Variables screenshot.
- [x] Cover lifecycle, transport, repeated submission, cancellation,
unmount, Preview, template, MCP binding/style, and editor completion
with focused tests.
- [x] Run relevant typechecks, lint, formatting, fixture generation, and
independent review.
- [x] Required CI checks pass on the latest commit.

## Verification

Local focused Form browser tests (25), Form template tests (12), Builder
Preview and Form context tests (14), and mounted editor example/reset
tests (6) pass. Builder, SDK React, SDK registry, and project-build
typechecks pass, as do lint, formatting, and fixture generation. The
fixture sync regenerated two unrelated linked-project site paths; those
outputs were restored before commit. Independent review found no
remaining issues. All latest-commit checks passed; E2E shard 9 passed on
a targeted rerun after its two Form tests also passed locally with 11
related tests.

This follow-up adds 162 net non-test lines, more than the initial
estimate. The extra code identifies the actual callback-bound variable
by ID, even when renamed, and gives autocomplete a separate example
scope so it cannot affect actual values. One provider covers Form fields
and Resource editors. No schema or package was added.

The existing Variables screenshot predates `formProgress`; its
explanatory text is current. The React Router fixture's built browser
client grew by 4 KiB on Linux CI (376 → 380 KiB), and its checked limit
matches that measured output. Multipart transfer remains one whole
request.

Browser submission supplies live progress. MCP can discover
`formProgress`, bind the Progress container, and style it; server
simulation reports final outcomes and does not measure browser uploads.
2026-10-26 14:38:12 +01:00
..
2026-06-24 21:20:33 +02:00