[ako]

Syncs ako/mxcli:main into upstream: 12 commits from fork PRs ako#1783, ako#1828, ako#1842 and ako#1846.

Fixes #1226.

Configurable microflow/nanoflow layout styles

The problem: teams disagree on how a microflow should look, and every mxcli layout flows run undid a team's hand-applied house style.

The fix: the flow layout is now a committed project setting. layout-config.yaml lives in .claude/ or next to the .mpr, and is looked up like lint-config.yaml:

flows:
  preset: true-right-false-down   # happy-line (default) | true-right-false-down
  if-else: true-right-else-column # lanes | true-right-else-column
  case-split: lanes               # lanes | first-right-rest-columns
  guard: return-below             # return-below | true-right
  wrap: rows                      # rows | off
  max-row-width: 2880             # px, 640..20000

Option	Non-default value draws
if-else: true-right-else-column	TRUE on the line, and ELSE as a column under the decision that rejoins the merge from below
case-split: first-right-rest-columns	the first outcome on the line, and every other outcome as a column under the decision, side by side
guard: true-right	a guard's early return stays on the line, and the happy path drops to a new line
wrap: off, max-row-width	never wrap, or wrap at another width

• Strict config: unknown keys or values are errors, not a silent fallback.
• New commands: mxcli layout config shows the style in force, and mxcli layout flows --style <preset> tries one.
• The style travels with the flow: a flow laid out in a non-default style records its options in one documentation line, @mxcli-layout: …, so describe and later layouts keep it.
• No config means no change:
  • 137 created flows have identical positions, sizes, connection sides, curves and documentation before and after.
  • The same holds after layout flows on every module.
  • Describe of 163 flows, including Studio Pro-drawn Marketplace flows, is identical.
• Fixes inside the new styles:
  • Nanoflow describe now passes the flow's documentation, so it can see the recorded style.
  • A TRUE-right guard in a branch no longer moves the final end event.
  • Column measurements no longer let an outer column land on a nested one.
• Validated: mxbuild 11.6.6 mx check gives 0 errors on a microflow and a nanoflow using every new option at once. It hasn't been opened visually in Studio Pro yet.
• Docs:
  • The proposal is PROPOSAL_configurable_flow_layout.
  • mxcli syntax microflow layout gains a Layout style section.
  • The docs-site and write-microflows skill point to it.
• Not in this PR: wrap: snake, the spacing options and error-handler: row-end.

Lint

• MPR012 follows the app's Web UI client (MPR012 warns on every legacy image widget in a classic-client app, which Mendix 11 builds without CE0582 #1226). It assumed the React client is the only client on Mendix 11, and warned "mxbuild reports CE0582" on every legacy image widget of an app still on the classic client, where they build clean.
  • CE0582 is the React client's error.
  • The rule now reads Web UI's UseOptimizedClient, as the executor's check does.

Dependencies

• serialize-javascript goes from 7.1.0 to 7.1.4 in the vega-charts widget pack. This is a Dependabot dev-dependency bump