feat(submit): rich ingestion summary screen

[aptracebloc]

Goal

Turn the post-ingestion output into the installer's "success screen": outcome-colored, scannable, with a clear "what's next". Builds on the existing Summary parser — no parser rewrite.

Scope

• Upgrade internal/submit.RenderPanel (or add RenderSummary) to render via the Phase-1 ui package:
  • Outcome-colored header: green (clean success), yellow (partial — Summary.HasFailures() or non-zero skips), red (failed).
  • Key facts: table / category / intent; Total · Inserted · Skipped · File-transfer failures · DB-insert failures · Success rate; Ingestor ID.
  • A "What to do next" block (dashboard link, how to verify rows) mirroring tracebloc/client's print_summary.
  • Plain-ASCII fallback for non-Unicode / non-TTY — the // v0.2 TODO already noted in summary.go.
• Wire into the dataset push watch-completion path (replaces today's box panel).

Acceptance criteria

• Outcome-aware rendering (success / partial / fail) with color aligned to the exit-code contract (0 / 9).
• Plain fallback when non-TTY / --plain / NO_COLOR.
• Tests per outcome; existing Summary parser tests untouched and green.
• make ci green.

Go concepts we'll cover

• Rendering off an existing struct + its methods (Summary.HasFailures, SuccessRate).
• Branching presentation by state; reusing the Phase-1 ui helpers.

Notes

• Depends on #PHASE1. Keep the streaming parser as-is (already solid + tested). Branch off develop.

Part of the UX/interactive epic.

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