refactor(ux): consolidate BMAD skills, update design system, and clean up Prisma generated client

.cline/skills/bmad-checkpoint-preview/step-02-walkthrough.md

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+# Step 2: Walkthrough
+
+Display: `Orientation → [Walkthrough] → Detail Pass → Testing`
+
+## Follow Global Step Rules in SKILL.md
+
+- Organize by **concern**, not by file. A concern is a cohesive design intent — e.g., "input validation," "state management," "API contract." One file may appear under multiple concerns; one concern may span multiple files.
+- The walkthrough activates **design judgment**, not correctness checking. Frame each concern as "here's what this change does and why" — the human evaluates whether it's the right approach for the system.
+
+## BUILD THE WALKTHROUGH
+
+### Identify Concerns
+
+**With Suggested Review Order** (`full-trail` mode — the normal path, including when step-01 generated a trail):
+
+1. Read the Suggested Review Order stops from the spec (or from conversation context if generated by step-01 fallback).
+2. Resolve each stop to a file in the current repo. Output in `path:line` format per the standing rule.
+3. Read the diff to understand what each stop actually does.
+4. Group stops by concern. Stops that share a design intent belong together even if they're in different files. A stop may appear under multiple concerns if it serves multiple purposes.
+
+**Without Suggested Review Order** (fallback when trail generation failed, e.g., git unavailable):
+
+1. Get the diff against the appropriate baseline (same rules as step 1).
+2. Identify concerns by reading the diff for cohesive design intents:
+   - Functional groupings — what user-facing behavior does each cluster of changes support?
+   - Architectural layers — does the change cross boundaries (API → service → data)?
+   - Design decisions — where did the author choose between alternatives?
+3. For each concern, identify the key code locations as `path:line` stops.
+
+### Order for Comprehension
+
+Sequence concerns top-down: start with the highest-level intent (the "what and why"), then drill into supporting implementation. Within each concern, order stops so each one builds on the previous. The reader should never encounter a reference to something they haven't seen yet.
+
+If the change has a natural entry point (e.g., a new public API, a config change, a UI entry point), lead with it.
+
+### Write Each Concern
+
+For each concern, produce:
+
+1. **Heading** — a short phrase naming the design intent (not a file name, not a module name).
+2. **Why** — 1–2 sentences: what problem this concern addresses, why this approach was chosen over alternatives. If the spec documents rejected alternatives, reference them here.
+3. **Stops** — each stop on its own line: `path:line` followed by a brief phrase (not a sentence) describing what this location does for the concern. Keep framing under 15 words per stop.
+
+Target 2–5 concerns for a typical change. A single-concern change is fine — don't invent groupings. A change with more than 7 concerns is a signal the scope may be too large, but present it anyway.
+
+## PRESENT
+
+Output the full walkthrough as a single message with this structure:
+
+```
+Orientation → [Walkthrough] → Detail Pass → Testing
+```
+
+Then each concern group using this format:
+
+```
+### {Concern Heading}
+
+{Why — 1–2 sentences}
+
+- `path:line` — {brief framing}
+- `path:line` — {brief framing}
+- ...
+```
+
+End the message with:
+
+```
+---
+
+Take your time — click through the stops, read the diff, trace the logic. While you are reviewing, you can:
+- "run advanced elicitation on the error handling"
+- "party mode on whether this schema migration is safe"
+- or just ask anything
+
+When you're ready, say **next** and I'll surface the highest-risk spots.
+```
+
+## EARLY EXIT
+
+If at any point the human signals they want to make a decision about this {change_type} (e.g., "let's ship it", "this needs a rethink", "I'm done reviewing", or anything suggesting they're ready to decide), confirm their intent:
+
+- If they want to **approve and ship** → read fully and follow `./step-05-wrapup.md`
+- If they want to **reject and rework** → read fully and follow `./step-05-wrapup.md`
+- If you misread them → acknowledge and continue the current step.
+
+## NEXT
+
+Default: read fully and follow `./step-03-detail-pass.md`