Task: Integrate conversation-first AI Design client

Identity

Integrate completed client source fe50e4b from task 20260903-design-guided-conversation-client-8b4e1c72 onto exact main baseline 14efa99f0ca7a02d6ae4e08311f125c56b9399a6.
Promote the accepted conversation-first AI Design presentation into canonical current state, system overview, and business rules.
Preserve the three explicitly adopted foreign untracked task records byte-for-byte; do not add, move, edit, stash, reset, or clean them.
Do not change server, Electron Main, DTO/API, generation, billing, plugins, package, deployment, publication, or remote history.

The user explicitly replaced the former form-led presentation with a natural conversation that helps young creators describe a clear need. This is the human-confirmed product direction for the integration decision.
ADR-007 remains accepted: Current Specification is still server authority, Renderer drafts remain local until accepted, and generation confirmation still submits only an immutable Quote identity.
Integrate the source task record unchanged. Canonical documents may summarize its accepted promotion candidate but must not overstate local automation as production deployment or real paid generation evidence.
The completed source task passed focused, adjacent, typecheck, lint, production build, and Electron end-to-end verification. One unrelated Pi real-process timing assertion failed only under full parallel load and passed 5/5 in isolation.

Concurrent Task Gate: passed in Integration mode on root main; the worktree is exclusively owned by this task and its three known foreign task records were adopted by exact fingerprint under prior user authorization.
Planning Gate: passed after reading the active and source tasks, integrated current state, ADR-007, system overview, business rules, success criteria, and the evidence, reflection, commitment, and stale indexes.
Other active tasks are isolated in separate worktrees. The completed Design source owns the exact ImageCanvas changes being integrated; plugin navigation is already present in the base; no active peer owns or semantically conflicts with this scope.
project-positioning.md remains a project-wide placeholder. Concrete constraints come from accepted ADR-007 and the populated architecture/domain/current-state records.

Applied source fe50e4ba198649a07c5c9443f15edf7dfa2a47e6 without conflicts onto its exact parent baseline. The source task record remained byte-identical to the committed source blob.
main now contains the conversation-first ImageCanvas: natural description and one-at-a-time Agent questions are primary, persisted option cards are not rendered as a form, the “AI 听懂的想法” projection is secondary, detailed constraints are collapsed by default, and manual field adjustment is explicitly optional.
Promoted the accepted behavior to current-state.md, system-overview.md, and business-rules.md without changing ADR-007's authority or Quote boundary.
The three adopted foreign untracked task records remain unmodified and excluded from the integration commit.

Source product paths match source commit fe50e4b exactly.
Root-main focused/adjacent unit regression: 45 passed.
Root-main TypeScript tsc --noEmit: passed.
Root-main changed-file ESLint: passed.
Root-main production Vite/Electron build: passed with only existing browserslist, dynamic-import, and chunk-size warnings.
Root-main Electron/Playwright AI Design flow: 2 passed across desktop/mobile, optional manual adjustment, conversation, Quote, and generation confirmation.
Source full-unit evidence: 1866 passed / 2 skipped / 1 unrelated timing failure; the Pi real-process timing file passed 5/5 in isolation, and pressure passed 1/1.
Source task record blob equality, git diff --check, project-doc completeness, and task-aware integration drift: passed.

Applied the source task's conversation-first presentation candidate to canonical current state, system architecture, and business rules. No unresolved promotion candidate remains.