feat(frontend): add static evidence explorer and model release interface

frontend/.env.example

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+# Defaults to the explicitly synthetic snapshot bundled in public/data.
+VITE_DATA_MODE=fixture
+VITE_SNAPSHOT_PATH=data/snapshot.json
+# Optional fixed deployment prefix. Default ./ supports any static directory.
+# VITE_BASE_PATH=/OpenVerifiableLLM/
+# Development only. Has no effect in production builds.
+# VITE_SCENARIO=empty
+# VITE_MOCK_INFERENCE=true

frontend/.gitignore

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+node_modules/
+dist/
+playwright-report/
+test-results/
+.env.local

frontend/CHECKLIST.md

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+# Contributor brief checklist
+
+| Requirement | Delivered evidence / remaining input |
+| --- | --- |
+| Overview, explorer/detail, releases, verification and inference view | All six implemented in src/pages.tsx; all adapt to mobile. |
+| Explain project and inspect source-to-release process | Overview includes purpose, seven declared stages, source references and separate workflow disclosure. |
+| No fake released model | Two unavailable role cards; downloads disabled; production inference always unavailable. |
+| Explicit fixtures and no success fallback | Persistent fixture disclosure; schema/mode validation; public mode rejects synthetic evidence even with approval fields; loader fails closed. |
+| Named, scoped results | Check profile/scope/result/explanation/operator/attestation and evidence IDs; publisher/project/consumer/independent attribution separated. |
+| Empty checks never overall success | Tested empty snapshot; no overall verification verdict exists. |
+| Pilot versus production | Scope filters and record scope; synthetic pilot pass retains production NOT_RUN. |
+| Missing/invalid/unsupported evidence | Invalid/schema/HTTP states; missing detail routes and supporting reference warnings; UNAVAILABLE/UNSUPPORTED check results. |
+| Digest copy and accessible feedback | Full digest; Clipboard API result checked; failure fallback to manual copying. |
+| Parent/child/superseded report navigation | Stable hash routes; missing references visible; original failed reports preserved. |
+| Original evidence references | HTTPS-only links and raw supplied revisions/paths; null values stay unknown. Default synthetic records do not invent original artifact URLs. |
+| Approved real metadata traceability | Schema and configuration ready. **Blocked on approved pinned snapshot, current goal documents and adapter mapping review.** |
+| Five verification profiles | Artifact/identity, data reconstruction, sampled replay, full replay and inference reproduction remain distinct. |
+| Tested commands only | No invented commands. Future commands require approval/source/validation/resource metadata; copying only in public mode. |
+| Mock inference isolated and labelled | Development-only lazy import; release/settings checks; success/error/timeout/empty/cancel/retry/history/copy behavior. Production bundle scan and browser tests. |
+| Future available releases | Development fixture with exact identity/inventory/runtime/parent/report rendering; immutable file-URL builder; synthetic downloads disabled. |
+| Accessibility | Labels, focus, skip link, semantic tables/details, keyboard menu, announced data/copy states, mobile wrapping, reduced motion. Actual results and limits in validation report. |
+| No untrusted raw HTML | React text rendering; safe protocols; escaped and bounded JSON. |
+| No large automatic fetches or private data collection | Only small same-origin metadata; bounded loader; self-hosted fonts; no analytics/account/prompt persistence. |
+| Reproducible install/build | Exact versions, lockfile and documented Node floor; verified scripts in validation report. |
+| Static-safe base-path routes | Hash routes and relative assets; browser suite uses a non-root static prefix without SPA fallback. |
+| Training and trust policy untouched | Entire deliverable confined to frontend/. No live resource or repository action. |
+| Handoff | README, tests, screenshots, validation report, proposed PR text and exact remaining inputs. |
+
+This checklist demonstrates the frontend assignment's fixture-backed scope. It does not mark the overall model project complete. Actual project status and inference remain deferred to the maintainer.

frontend/PR_HANDOFF.md

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+# Proposed PR
+
+**Title:** Add a static evidence explorer and release frontend for OpenVerifiableLLM
+
+## Description
+
+Visitors need to distinguish model provenance, scoped replay reports and model availability. This adds an isolated React/TypeScript/Vite frontend featuring an enhanced design system with an interactive 3D globe, container scroll perspective cards, six responsive views, URL-preserved evidence filters, shareable records, parent/supersession navigation and full-digest copying.
+
+The application uses validated, explicitly synthetic presentation metadata until maintainers supply an approved pinned public snapshot. Invalid/empty/missing metadata cannot become overall success. Verification results remain separate from workflow progress and browser loading. Both current model roles stay unreleased and production generation stays unavailable.
+
+Includes a development-only inference adapter/UI with exact release/settings checks, accessible interaction states, a lockfile, unit/component/browser tests, production mock-exclusion checks, static base-path routing and an integration handoff. No training, verifier, trust policy, signing, progress state, Python dependency or cloud-resource change is included.
+
+## Validation
+
+See VALIDATION_REPORT.md for actual executed checks and screenshots/. Do not claim the upstream Python suite ran; it was not run for this isolated frontend deliverable. The current full upstream checks should be run in the integrating contributor's supported checkout before PR submission, as CONTRIBUTING.md requests.
+
+## Review focus
+
+- Presentation contract and claim/attribution wording.
+- Evidence fixtures and preservation of failed/superseded originals.
+- Approved public metadata mapping before changing data mode.
+- Frontend-only dependency policy and accessibility checks.
+
+## Remaining maintainer inputs
+
+1. Approved small display snapshot, immutable source revision and raw field mappings.
+2. Current PROJECT_GOAL.md and goal_state.json context; no mutable operational state should be published wholesale.
+3. Final base/chat repositories, immutable revisions, release roots, inventories, sizes, licenses, model cards, parent relation and supported runtime.
+4. Approved tested instruction text for each verifier profile, prerequisites, validation evidence and sourced resource measurements/estimates.
+5. Supported inference interface, release identity/capabilities, limits, privacy policy and cancellation semantics.
+6. Static-host owner/target/base path and any approved branding assets.
+
+## Changed paths
+
+All delivered paths are under frontend/: src/, public/data/, tests/, scripts/, screenshots/, licenses/, package.json/package-lock.json, TypeScript/Vite/Vitest/Playwright configuration and documentation. dist/ is included in the export for preview and is ignored by Git; do not commit it unless the upstream host explicitly requires generated files.
+
+The supplied archive had no frontend. Compare the current upstream tree before integration. Work on a separate branch and preserve others' work. No PR has been opened or submitted by this task.
+
+## AI assistance
+
+Implementation, fixture/test authoring, documentation and Figma design translation were AI-assisted with Codex and the Figma plugin. No human review, maintainer approval or real model verification is claimed. Recheck current contribution policy before submitting.