seo: hub page titles and descriptions, trim meta descriptions, add GX12 post

[foxis]

Rebased onto main now that #25 and #26 are merged. Base retargeted, so this diff shows only this branch's changes (62 files, +323/-34).

All three items measured against a local Hugo 0.163.3 build with #25 and #26 applied: EN sitemap 476 → 477 (the new post, 0 tag pages), LT 632 unchanged, GX12 post carries a valid BlogPosting, hreflang reciprocal on translated posts. Build warning-clean.

All three items measured against a local Hugo 0.163.3 build. EN 2403 → 2404 (+1, the new post), LT 632 → 632 (unchanged). Build warning-clean.

1. Hub pages had generated titles and no descriptions

Section pages were titled from a pluralised folder name, in both languages:

Page	Before	After
/fpv/	Fpvs | ITOHI	FPV Builds, Tuning and Blackbox Analysis | ITOHI
/colorimetry/	Colorimetries | ITOHI	Colorimetry, Spectrometers and Colour Science | ITOHI
/lt/fpv/	Fpvs | ITOHI	FPV konstrukcijos, derinimas ir juodosios dėžės analizė | ITOHI

And none of the section, category or series hubs emitted a meta description — all of which are in the sitemap.

Added _index.md for 7 sections, 4 series and the 6 categories with 3+ posts. Titles and descriptions all ≤155 chars. Verified section listings are unaffected: /fpv/ still renders 14 post links, matching the live page.

One thing I got wrong and fixed: the first pass added LT hubs everywhere, which created 7 Lithuanian pages with zero Lithuanian content and pushed LT from 632 to 646. Removed them; LT is back to 632. LT hubs now exist only where LT posts do.

Worth flagging separately (not touched here, it's a content decision): LT posts use translated taxonomy terms, so the Lithuanian side has its own slugs — spalv-mokslas, spektroskopija, technin-ranga. Both Techninė įranga and Aparatinė įranga are in use for Hardware, alongside the English hardware. That's three archive pages for one concept.

2. Meta descriptions were cut mid-sentence

The theme truncates to 160 chars. 18 EN and 14 LT frontmatter descriptions exceeded that, so they rendered with an ellipsis dropped into the middle of a clause. Worst was 247 chars.

• EN: rewritten tighter.
• LT: cut at sentence/clause boundaries to preserve your exact wording — then the six that came out dangling (...atradau., ...yra nuosekliai., ...trimis.) rewritten properly by hand.

All now ≤155. Verified 0 of 32 render an ellipsis.

summary is deliberately left long — it feeds the on-site excerpt, description feeds the meta tag. Different jobs.

The other 307 pages without explicit frontmatter descriptions still fall back to an auto-truncated summary. That's the theme default; not changed here, but it's the obvious next sweep if you want it.

3. New post: RadioMaster GX12

radiomaster gx12 is 720 searches/mo at difficulty 0 and nothing on the site aimed at it. Part 1 of a nine-part series is not the page that wins that query.

Added content/fpv/radiomaster-gx12/ — "RadioMaster GX12: Why I Chose It Over the Boxer" (55 chars with suffix).

Built only from what the series already documents: the Pocket/Boxer comparison, the top-box constraint, the six CFS buttons and their RGB, the per-model CFS override, board: gx12 on EdgeTX 2.12.2, the radio.yml audio settings, report_cell_voltage. No specs I couldn't verify — no price, screen, gimbal or weight claims — and a "what I have not measured" section stating that plainly.

Against your article rules:

Rule	Result
≤7 min prose at 220wpm	5.5 min (1209 words)
em-dash density ≤3–4/1000w	0
diagrams: WaveDrom/Mermaid/Chart.js/Graphviz only	1 Mermaid, no ASCII art
draft: false	yes
Page bundle + frontmatter convention	yes

Also retitled Part 1 from RadioMaster GX12 EdgeTX Voice Telemetry to Why EdgeTX Voice Telemetry Beats the OSD so the two pages don't compete for the same query.

Five internal links into the series, which none of those posts previously had pointing at them.

Notes

• cover.jpg is copied from the Part 1 bundle — it's your own GX12 photo, so it's honest, but you may want a distinct shot.
• Post is EN only, matching the 16 other EN-only posts in the repo. LT can follow if you want it.
• BlogPosting schema on the new post is verified present now that seo: drop tag archives from sitemap, add hreflang and BlogPosting schema #25 is merged (headline, datePublished, wordCount 1272, articleSection FPV, image).

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