Project Glowing Heart v1.8.4 Observer Contract Alignment

What changed since v1.8.3

The observer contract artifacts were aligned with the shared observer target.

What was fixed

• stale far=1000 example replaced with far=40
• right_vector placeholder added
• pixel_aspect_ratio added
• snapshot_channel placeholder added
• target camelCase to contract snake_case mapping documented

What this proves

The observer contract trail is internally cleaner before v1.9.

What this does not prove

No parity. No pixel comparison. No runtime equivalence. No renderer equivalence. No transport equivalence.

Next milestone

v1.9 should define the Shared Snapshot / Channel Contract.