v0.7.0

What's Changed

• chore(examples): scrub, standardize, reframe 04 by @chris-colinsky in #50
• feat(examples): add 05-08 (fan-out, parallel-branches, multimodal-prompt, checkpointing) by @chris-colinsky in #51
• feat(examples): close spec coverage gaps + add 09-tool-use by @chris-colinsky in #52
• docs(site): UX, nav, and reference cleanup by @chris-colinsky in #53
• docs(examples): per-example docs pages with mermaid diagrams by @chris-colinsky in #54
• docs: re-read README, Quickstart, Concepts against v0.6.0 by @chris-colinsky in #55
• docs: add RELEASING.md by @chris-colinsky in #56
• docs: complete reference, add middleware page by @chris-colinsky in #57
• chore(release): v0.7.0 by @chris-colinsky in #58
• chore(release): pin pyproject to 0.7.0rc1 + fix RELEASING.md by @chris-colinsky in #59
• chore(release): v0.7.0 by @chris-colinsky in #60

Full Changelog: v0.6.0...v0.7.0