Add clipboard file paste to post composer

[lopugit]

Summary

• attach clipboard files from the focused post/comment editor and automatically open the existing Photos panel
• accept file-bearing paste anywhere in the open attachment panel through the same bounded upload queue as file selection and drag/drop
• preserve normal text paste and keep portal-based Thing editor pastes out of the post
• document and test the clipboard workflow

Validation

• targeted ESLint
• focused clipboard tests: 17 passed
• feed tests: 35 passed
• attachment tests: 143 passed
• production build and Vercel output verification
• live desktop and 390 px mobile browser checks, including editor/panel file paste, normal text paste, overflow, and browser console
• Graphify update/ensure and CAS tests: 15 passed

Manual QA note

The isolated local environment intentionally lacked usable object-storage upload credentials, so pasted files reached the shared attachment queue and rendered their rows/previews, while final storage preparation returned the fixed authored error. No test post was published.

[github-actions]

🤖 Lopu detected an out-of-date PR branch

Status: Work detected — Lopu is taking ownership.

Current phase: Entering Lopu's serialized PR-resolution queue.

Estimated completion: around 10:16 UTC (~20 minutes; this adjusts as the queue moves).

Next automatic check-in: within 10 minutes while work remains active. You can stay on this PR; there is no need to find the Actions run.

Time conversion (UTC source)

Moment	UTC	Los Angeles	Melbourne
Updated	2026-09-03 09:56 UTC (UTC+00:00)	2026-09-03 02:56 PDT (UTC-07:00)	2026-09-03 19:56 AEST (UTC+10:00)
Estimated finish	2026-09-03 10:16 UTC (UTC+00:00)	2026-09-03 03:16 PDT (UTC-07:00)	2026-09-03 20:16 AEST (UTC+10:00)

Los Angeles and Melbourne use their real IANA time zones, so PDT/PST and AEST/AEDT offsets change automatically.

Lopu queue and PR pulse

Scope	Metric	Count
Repository	Open PRs	13
Repository	Conflicting	1
Repository	Out-of-date with target	4
Repository	GitHub state unknown	1
Repository	Part of an open stack	0
Repository	Touch files changed by another open PR	9
Repository	Target a non-root branch without an open parent PR	0
This resolver batch	Admitted snapshots	1
This resolver batch	Currently resolving	0
This resolver batch	Waiting	1
This resolver batch	Finished	0

Related PR context

• Stack: No open parent or child PR currently links to this branch.
• Target: main is a repository root/integration branch.
• Changed-file overlap: 1 changed file is also touched by #10, #295, #554, #564, #578, #592.

Exact branch pair: main → codex/post-composer-paste-attachments.

Timeline

• 09:56 UTC — Detected that main needs to be merged into codex/post-composer-paste-attachments; assigning the exact snapshot to the resolver queue.

[github-actions]

🤖 Lopu detected an out-of-date PR branch

Status: Work detected — Lopu is taking ownership.

Current phase: Entering Lopu's serialized PR-resolution queue.

Estimated completion: around 10:36 UTC (~20 minutes; this adjusts as the queue moves).

Next automatic check-in: within 10 minutes while work remains active. You can stay on this PR; there is no need to find the Actions run.

Time conversion (UTC source)

Moment	UTC	Los Angeles	Melbourne
Updated	2026-09-03 10:16 UTC (UTC+00:00)	2026-09-03 03:16 PDT (UTC-07:00)	2026-09-03 20:16 AEST (UTC+10:00)
Estimated finish	2026-09-03 10:36 UTC (UTC+00:00)	2026-09-03 03:36 PDT (UTC-07:00)	2026-09-03 20:36 AEST (UTC+10:00)

Los Angeles and Melbourne use their real IANA time zones, so PDT/PST and AEST/AEDT offsets change automatically.

Lopu queue and PR pulse

Scope	Metric	Count
Repository	Open PRs	17
Repository	Conflicting	1
Repository	Out-of-date with target	6
Repository	GitHub state unknown	1
Repository	Part of an open stack	0
Repository	Touch files changed by another open PR	10
Repository	Target a non-root branch without an open parent PR	0
This resolver batch	Admitted snapshots	6
This resolver batch	Currently resolving	0
This resolver batch	Waiting	6
This resolver batch	Finished	0

Related PR context

• Stack: No open parent or child PR currently links to this branch.
• Target: main is a repository root/integration branch.
• Changed-file overlap: 1 changed file is also touched by #10, #295, #554, #564, #578, #592, #598.

Exact branch pair: main → codex/post-composer-paste-attachments.

Timeline

• 10:16 UTC — Detected that main needs to be merged into codex/post-composer-paste-attachments; assigning the exact snapshot to the resolver queue.

[github-actions]

✅ Develop S3 preview ready

• Commit: ab3706c3
• Environment: Vercel Custom Environment develop
• Preview: https://pr-595.previews.dev.thingtime.com
• Immutable deployment: https://thingtime-7p66xjuz5-lopugits-projects.vercel.app
• Vercel status: open deployment

The alias passed the develop bucket CORS preflight and a final live PR/SHA fence.

Generic Vercel Preview deployments use the shared development runtime; this controller adds the stable exact-SHA alias and marker-scoped cleanup.

[github-actions]

⚠️ Could not auto-resolve every conflict with main — manual resolution is needed for the residual paths below. See the workflow run.

Residual conflicted files:

• TESTING.md

[github-actions]

🤝 Merged main into codex/post-composer-paste-attachments — conflicts auto-resolved by Lopu's PR manager.

Conflicted files:

• TESTING.md

Rebuilt and committed the merged code graph with graphify update .. LLM semantic extraction was attempted afterward but failed; the valid structural result was preserved (see the workflow log).

Please review the merge commit before relying on it.

[github-actions]

🤖 Branch status still computing. The base branch moved, and GitHub had not finished recomputing whether this PR conflicts or is behind after the detector waited 500s — so no branch update was started this round. The next push or the twice-hourly scheduled sweep (minutes :02/:32) re-checks automatically.

Posted by the conflict detector at 03:33 UTC, 2026-09-05; this notice is edited in place on re-checks.