#13838: UI: fix config panel CI failures and modularize rendering

## Summary - reworked config UI layout and form/raw UX (full-screen config workspace, topbar metadata, optimized cards) - improved Raw mode with structured JSON view (colors, collapsible nodes, parse error context, wrapping) - fixed CI code-size failures by splitting large files into focused modules: - `ui/src/ui/views/config.ts` -> `config-view-core.ts` + `config-view-raw.ts` - `ui/src/ui/views/config-form.node.ts` -> `config-form.node.helpers.ts` - `ui/src/ui/app-render.ts` -> `app-render.config.ts` - removed duplicate-function regression detected by code-analysis ## Validation - `oxlint` passed on touched files - `oxfmt --check` passed on touched files - `python scripts/analyze_code_files.py --compare-to upstream/main --threshold 1000 --strict` passed <!-- greptile_comment --> <h2>Greptile Overview</h2> <h3>Greptile Summary</h3> This PR refactors and modularizes the config panel UI to address CI code-size limits, splitting previously-large view and helper files into focused modules (`app-render.config.ts`, `config-view-core.ts`, `config-view-raw.ts`, and `config-form.node.helpers.ts`). It also updates the config layout/UX (full-screen workspace, sticky action bar, diff dropdown, section/subsection navigation) and improves Raw mode with structured JSON5 viewing and richer parse-error context. Changes are largely internal to the UI layer: `renderApp` now delegates config-specific rendering and progressive “warm” rendering logic to the new `app-render.config.ts`, while `renderConfig` composes its new core/raw helpers for schema analysis, diff computation, and structured tree rendering. <h3>Confidence Score: 5/5</h3> - This PR appears safe to merge with minimal risk. - Review found no verified logic or runtime errors introduced by the refactor; changes are modularization and UI behavior adjustments with corresponding test updates for schema analysis behavior. - No files require special attention <!-- greptile_other_comments_section --> _{(3/5) Reply to the agent's comments like "Can you suggest a fix for this @greptileai?" or ask follow-up questions!} **Context used:** - Context from `dashboard` - CLAUDE.md ([source](https://app.greptile.com/review/custom-context?memory=fd949e91-5c3a-4ab5-90a1-cbe184fd6ce8)) - Context from `dashboard` - AGENTS.md ([source](https://app.greptile.com/review/custom-context?memory=0d0c8278-ef8e-4d6c-ab21-f5527e322f13)) <!-- /greptile_comment -->