docs: finalize the block-editor plan, wired via Klickwege into a2ui-rs

[AdaWorldAPI]

Docs-only. Turns this session's rulings into a durable plan and records the a2ui-rs wiring as a ledger entry.

docs/BLOCK-EDITOR-PLAN.md

Sequences W0–W5 with gates, five open decisions (D1–D5), and five falsifiers. It opens by naming what is LOCKED, so a future session cannot re-derive it — every item is shipped code with tests (#234, #235, #236), not intention:

0x17XX domain · plug-and-play producer posture · provenance fence · one content classid · (function : value) calls · arity-by-classid (LaneShape) · nesting by reference · loud narrowing · literal-over-grammar · retired edge block.

The headline: most of the a2ui wiring already exists

Charter C1.6 — "a click IS a navigates_to/ActionInvocation edge" — and a2ui-server already ships the path as pure compile-time value construction (#209, warden COMPILE-TIME-CLEAN, 34 tests):

ActionInvoke{key, ordinal, args}     ← up the wire, by ADDRESS (T2)
  → DesktopSession::receive_action
  → KlickwegEdge{from_key, class_id, ordinal, predicate, seq}
  → lower_action_fire  → ogar_vocab::ActionInvocation
     lower_screen_jump → NavWitness

Placing a block, connecting two blocks, and clicking a placed block are each a click by ordinal address — so each is already a Klickweg edge. Edit telemetry and harvested-app telemetry unify in one closed predicate set, with no new predicate. The Predicate enum is count-locked at 79; extending it is a gated ontology change, not a consequence of this arc.

Nesting maps 1:1 — the ObjectSlot "A3 Klickwege brick" recursion desktop → window → region → widget becomes canvas → script → block → input, which a2ui-wasm::resolve_nested walks unchanged.

Gaps recorded as measured, not assumed

need	state
interaction → graph edge	exists
nested addressing	exists
palette of pickable tiles	absent — nothing represents "available but unplaced"
2-D placement	absent — Skin::{Form, Flow} are both 1-D list renderers
multi-facet body ingest	absent — a2ui-wasm implements ONE 12-byte facet; a body is 30
drag/connect	absent, and the one T2 pressure point

None are charter-forbidden, but the editor tier is a real build, not wiring — correcting an earlier characterisation of mine in this arc.

Open decision worth the reviewer's eye — D2

"Place tile at slot N" should ride ActionInvoke{ordinal: PLACE, args: [N, fn]} rather than a third FrameKind: args is explicitly ClassView/ActionDef-carved, so this is an address-carried write (what T2 mandates), whereas a third frame kind widens a deliberately closed vocabulary.

Roadmap (operator-set)

ABI-shaped Blockly/Scratch first → Klickwege wiring second → PowerAutomate-shaped skin third. Both skins are Mario-editor ergonomics over ClassView : WideFieldMask — T1 applied at editor scale.

W1 falsifier, unchanged since the first turn of this arc:

A drag produces zero SoA writes. An operand change produces exactly one.

Ledger

docs/DISCOVERY-MAP.md → D-BLOCKS-KLICKWEGE, graded [H] (PLAN) — the W0 substrate it builds on is [G]/CODED; the wiring itself is unbuilt and graded honestly as such.

Gates

Docs-only. 16 ogar-blockly tests and cargo check --workspace re-verified unchanged.

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Generated by Claude Code

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