* docs(findings): add PHP MCP SDK + Symfony AI Mate skills-as-resources entry
First PHP-ecosystem implementation of SEP-2640: php-sdk#372 serves a
directory of SKILL.md files as skill:// resources, symfony/ai#2132 ships
the skill content in the Mate MCP server. Records what was verified
(serving via MCP Inspector snapshots), the spec-text frictions hit
(_meta namespace, resource name charset, empty-payload serialization),
and the Claude Code consumption gap.
* docs(findings): reframe _meta and resource-name notes per SEP-2640 review
The SEP PR specifies the io.modelcontextprotocol.skills/ _meta prefix
(our SDK independently converged on it); the resource-name point is an
SDK registration-uniqueness detail, not a spec gap. Reframe both and
note the PR-vs-repo-draft drift on the _meta sentence.
* docs: note PHP SDK findings were written against the pre-v1 draft
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Co-authored-by: olaservo <olahungerford@gmail.com>