content(blog): add P23 free-CLF-via-promo draft (draft:true)

[nastaso]

DRAFT ONLY - do not publish

New blog post P23 as draft: true. Publishing (flipping draft: false) is owner-consent-gated per the hard rule; this PR only adds the draft file. No other files touched; build regeneration (sitemap/_csp) was restored before commit.

• File: src/content/blog/how-to-get-aws-cloud-practitioner-exam-free-2026.md
• Slug: how-to-get-aws-cloud-practitioner-exam-free-2026
• Target: free/voucher cluster ("cloud practitioner exam free"), distinct from P8's "exam cost" primary - the post never targets cost keywords and does not link the unpublished P8 slug.

What the post covers

1. Leads with the official 2026 promo (answer-first lede, N14): promo code from the official Pearson VUE offer page gives 50% off AIF-C01 (about USD 50); pass by September 30, 2026 and the CLF-C02 exam is free, to be completed by November 30, 2026. All conditions stated: register/take via Pearson VUE between May 26 and September 30, 2026, must use the code AND pass (fail = no free exam), 18+, not combinable, non-transferable. The code itself is deliberately NOT printed - readers are pointed to the official page (per brief).
2. Sunset note near the top: the promo path closes after November 30, 2026; readers are routed to the evergreen section and the post will be reframed at expiry.
3. Evergreen discount landscape so the post survives the promo: the standing 50% voucher for existing cert holders, AWS Educate / Emerging Talent Community, employer sponsorship, recurring promotions, and the retake reality (14-day wait, full fee).
4. Cross-cert bridge (CLF <-> AIF): links the live comparison post and notes the promo inverts the usual CLF-first order; builder-framed, no claim the owner used the promo.

Citations (N1: 4 outbound authority links, all fetched live 2026-07-04)

URL	Backs	Status
https://www.pearsonvue.com/us/en/aws/aif2cloud.html	All promo terms (dates, 50%, pass condition, 18+, Pearson VUE only)	VERIFIED live; page terms match the post verbatim (dates, failure clause, age)
https://aws.amazon.com/certification/benefits/	50% discount voucher for existing cert holders	VERIFIED live; page says "Get access to a 50% discount voucher to apply toward recertification or any other exam"
https://docs.aws.amazon.com/aws-certification/latest/cloud-practitioner-02/cloud-practitioner-02.html	65 questions / 90 min / 700 of 1000	Canonical AWS-CLF-GUIDE source already in blog-sources.md
https://aws.amazon.com/education/awseducate/	AWS Educate as the student entry point	Page VERIFIED live, BUT it does not itself mention exam vouchers. The post hedges ("has periodically offered... treat it as a path to check rather than a guarantee"). OWNER: please verify the Emerging Talent Community voucher claim or trim that clause.

Owner-verification flags: (1) the AWS Educate / Emerging Talent Community voucher sentence above; (2) sanity-check the promo terms once more on the Pearson page at the owner pass (they were fetched and matched today, but this is a live promotional page).

Sunset date

Promo registration/pass deadline September 30, 2026; free CLF-C02 completion deadline November 30, 2026. The post carries an explicit time-sensitive note up top plus an FAQ entry on what happens after expiry.

OWNER marker

Exactly one first-person marker, in the "Is the promo worth it if you only wanted Cloud Practitioner?" section: <!-- OWNER (rule 2): first-person line here ... --> (hint: owner passed CLF-C02 directly at full price; do not imply promo use).

Verification

• npm run build GREEN (exit 0): prebuild validate-blog-frontmatter passed ("4 post file(s), 1 non-draft; All non-draft posts valid" - slug unique); postbuild check:citation, check:graph, check:person-graph, check:seo-head all byte-identical/passing (draft:true is excluded from indexable output as expected); csp:hash + cf:headers regenerated then git restored.
• npm run lint clean.
• npm run test 273/273 passed (22 files).
• astro check 0 errors, 0 warnings.
• Dash check: grep -nP '[\x{2013}\x{2014}]' on the post = EMPTY (no em/en dashes anywhere).
• e2e on isolated port: PW_PORT=4409 PW_REUSE_SERVER=0 npm run e2e = 94 passed, 20 skipped (env-gated realcreds/seeded baseline), 0 failed, exit 0.
• Frontmatter matches the collection schema: title 54 chars, description 152 chars, cert-code tags clf-c02 + aif-c01, ogImage exists, FAQ frontmatter mirrored verbatim in a visible FAQ section (FAQPage JSON-LD parity).

Do not merge without owner review. Do not flip draft: false.

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