Allow Threads text-only posts.publish on current adapter

[0thernet]

Supersedes #25 by recovering its valid text-only Threads behavior on the current released adapter stack instead of downgrading the active manifest.

Threads posts.publish@5 now requires exact text and accepts an optional PNG attachment. Text-only posts skip rupload, use the reviewed create form, bind a locator-only durable target, and verify exact actor/text permalink readback with no image. PNG posts keep their existing upload and readback path. Threads video publication remains independently preserved through media.publish@1 and MP4.

Contract convergence

• Archive the exact previous active Threads v1.6.0 manifest byte-for-byte.
• Advance the active manifest to v1.7.0 with posts.publish@5.
• Preserve historical posts.publish@4 image recovery and current media.publish@1 video recovery.
• Keep R3 preview/confirm, target reconciliation, and indeterminate post-create boundaries intact.
• Update the generated contract inventory, adapter packaging, routing guidance, and the fresh Unreleased changelog section.
• Preserve all immutable v0.13.1 package, install, media, website, and release metadata.

Verification

• bun run typecheck
• Focused Meta policy/runtime/plugin, provider inventory, and adapter-sync suite: 65 passed, 0 failed, 862 assertions.
• bun run check

The exact candidate also received an independent semantic audit before merge. The superseded #25 branch is retained for provenance and will be closed only after this successor is merged and its postmerge gate passes.

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Project	Deployment	Actions	Updated (UTC)
wrench	Ready	Preview	Aug 23, 2026 5:41am