v0.3.8

What's Changed

• docs: record Gateway contract and v0.3.6 release by @ZhiXiao-Lin in #194
• fix(gateway): enforce runtime schemas and sanitize MCP errors by @ZhiXiao-Lin in #195
• fix(mcp): sanitize Plugin Manager diagnostics by @ZhiXiao-Lin in #197
• docs: record v0.3.7 release evidence by @ZhiXiao-Lin in #196
• docs: document manager MCP error boundary by @ZhiXiao-Lin in #198
• feat: retain exact capability snapshot lease in Gateway by @ZhiXiao-Lin in #199
• fix(gateway): separate publication and package generations by @ZhiXiao-Lin in #200
• docs: document gateway lease and generation axes by @ZhiXiao-Lin in #201
• feat(gateway): add bounded HTTP admission by @ZhiXiao-Lin in #202
• docs: document capability gateway HTTP boundary by @ZhiXiao-Lin in #204
• fix(gateway): harden HTTP client compatibility by @ZhiXiao-Lin in #203
• chore(release): prepare a3s-use 0.3.8 by @ZhiXiao-Lin in #205

Full Changelog: v0.3.7...v0.3.8