Restore the 19 gallery images the conversion dropped

[ptr727]

Follow-up to #43, which added the gate that measures this. The gate reported 120 orphans; this restores 17 of them to the pages they belong on.

What was lost, and why

Five gallery shortcodes across three posts were emitted empty. The ESP32 post announced:

Below are pictures of the finished case and the utility meters:

and then rendered <div class="gallery gallery-cols-4"></div>.

The cause is specific: WordPress used Gutenberg's wp-block-gallery with nested <figure> elements, and wp2hugo wrote the wrapper while dropping what it wrapped. gallery is the only shortcode this happens to.

Where the images came from

The captured live site, not a guess. The WordPress export XML does not carry these post bodies, so the crawl under mirror/ is the authoritative source. It holds each gallery's nested figures in document order, with their widths and captions. All 19 files were already on disk, so nothing was refetched, and three captions came back with them.

Membership genuinely was not inferable from this repo — and it would have been guessed wrong. The ESP32 gallery opens with a photo from 2018 and one from 2020, older images reused in a 2021 post, where the obvious guess was the sequential camera run from that month. Those two were already linked from their own original posts, which is why the orphan count falls by 17, not 19.

Scope is exactly these five

A count comparison across all 19 posts holding galleries: every populated gallery matches the mirror exactly, and only the five empty ones differ.

Post	Hugo	Mirror	Delta
esp32-water-and-gas-utility-meter	[0]	[4]	+4
installing-flair-smart-vents...	[0,2,3,0,3,2,2,3,0,3,2]	[4,2,3,4,3,2,2,3,4,3,2]	+12
halloween-pumpkins-and-lights	[2,0,3,2]	[2,3,3,2]	+3

The comparison has a blind spot worth stating, because it produced a wrong answer first: a mirror page parsed as having fewer figures than the markdown means the parser missed that page's markup, not that images were lost. Only a surplus in the mirror is a finding. Regex could not read nested figures at all and reported a fictional 194-figure loss; the stdlib HTML parser gives the real 19.

The ratchet worked

ORPHANED_MEDIA falls 120 -> 103 in this same change, because the gate demanded it rather than because I edited it alongside:

orphans: 103 of 1048 carried media files are linked from no page
         expected 120 - media was linked from a page, or orphaned files were removed;
                        lower ORPHANED_MEDIA to 103 in this change rather than leaving the slack
FAIL orphans

That is #43 earning its place one PR after landing.

Verification

Released to the local mirror and checked live, since this touches content/:

• assets rises 1012 -> 1031, matching the 19 restored references exactly.
• orphans falls to 103; parity PASS.
• PASS - 1245 URLs honored, rules confirmed from the release just installed.
• The restored images answer 200 on the running mirror.
• The ESP32 gallery now renders four figures where it rendered none.
• markdownlint, editorconfig-checker, and the module compile all clean.

What remains

103 orphans, cause unknown per file — a mix of further conversion losses and uploads the old platform never published. This repo cannot tell those apart; the capture can, by generalizing the comparison above. TODO.md records that, along with the parser blind spot so the next attempt does not repeat the 194 mistake.

One visible consequence to expect: the flair gallery at cols="5" holds 4 images, so with the 20% width from #41 it now occupies 80% of the row rather than filling it. That is the column count the author set in WordPress, and columns-5 is what the mirror carries, so the markup is faithful.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Restores missing image references inside previously-empty gallery shortcodes in imported Hugo post content, and updates the orphan-media baseline/notes so the URL-parity gate reflects the newly linked media.

Changes:

• Re-populates five previously-empty galleries across three posts with the correct figure entries.
• Updates ORPHANED_MEDIA baseline from 120 → 103 to reflect the restored references.
• Refreshes TODO.md to reflect the reduced orphan count and the current investigation approach.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
TODO.md	Updates the open decision note to reflect the new orphan baseline (103) and current attribution plan.
content/posts/2022/10/31/halloween-pumpkins-and-lights.md	Restores 3 missing gallery images to the previously-empty gallery block.
content/posts/2022/10/30/installing-flair-smart-vents-to-keep-room-temperatures-balanced.md	Restores images into three previously-empty galleries within the post.
content/posts/2021/08/09/esp32-water-and-gas-utility-meter.md	Restores 4 images into the previously-empty gallery referenced by the post prose.
checks/check-url-parity.py	Lowers ORPHANED_MEDIA baseline to 103 and updates the accompanying explanation comment.