Rewrite plugin/certified-plugins in all three locales around the
questions a plugin developer actually asks, and make it the single home
for certification: what it is, why it exists, when it is needed, what
changes after approval, and what the contract requires.
- Decision framing restored, including a needs/does-not-need table and
the explicit statement that most plugins do not need certification.
- Full manifest example, accepted values for both declaration fields and
the SDK version that recognises them.
- Constraints kept and tightened: stateless rules, allowed/forbidden
table, anti-patterns with correct/incorrect snippets, Runner notes,
self-check list.
- Submission flow moved onto this page so it no longer depends on the
publishing page.
- Operator content that duplicates the Core architecture document
removed (Cloud admission matrix, OSS issuer keys, certificate fields,
internal review tiers).
publish/market is now publishing-only with a one-line pointer, and its
misplaced plugin_submission screenshot moves back under the upload
section where it belongs. dev/basic-info replaces the commented-out
manifest fields with a link to the contract page.
ja had been missing whole sections (36 lines); all three locales now
share the same section structure.