docs: consolidate model-support entries in Latest News

[Qubitium]

Summary

Consolidated the verbose per-model Latest News bullets into fewer grouped entries.

What Changed

• Merged consecutive Added ... model support bullets that share the same version label into single combined bullets.
• Kept feature/kernel announcements (e.g., lm_head quantization, Unlimited-OCR, Swordfish) as separate items.
• Preserved the original version labels and used the most recent date for each consolidated entry.

Tests

README-only change; no functional or API changes. No unit tests needed.

Review Requirements

• I personally reviewed every file in this diff.
• I checked that the changes match existing project conventions.
• I avoided unnecessary code changes.

Notes

No migration notes, risks, or compatibility concerns. This is a documentation-only update.

Link to Devin session: https://app.devin.ai/sessions/cc6fe0917fc9498daa7615a56ca5d1f8
Requested by: @Qubitium

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