feat: add graphify plugin and documentation

- Introduced a new graphify OpenCode plugin to remind users about the knowledge graph before executing bash commands.
- Added AGENTS.md for agent guidance, including development commands, environment setup, Docker deployment, code structure, conventions, and testing instructions.
- Created opencode.json to configure the graphify plugin and superpowers.
- Updated tests to improve type safety and added missing imports in test files.
- Added .graphify_uncached.txt to track relevant files for graphify.

.graphify_uncached.txt

@@ -0,0 +1,21 @@
+AGENTS.md
+copilot-instructions.md
+README.md
+CLAUDE.md
+IMPROVEMENTS_SUMMARY.md
+INTEGRATION_EXAMPLE.md
+tests/README.md
+app/lib/ERROR_LOGGING_GUIDE.md
+graphify-out/GRAPH_REPORT.md
+data/documents/cmmoo4v5p0000ykou0bcivjsn/migr-ein-cmn4ogjc20007dfmmex6engdh-1777488241127.pdf
+data/documents/cmmoo4v5p0000ykou0bcivjsn/migr-ein-cmn4ogjc20007dfmmex6engdh-1777488343334.pdf
+data/documents/cmootxs7r0000nvgjmhgbanvx/demo-invoice-1-1777790365605.pdf
+data/documents/cmootxs7r0000nvgjmhgbanvx/cmopen7qx000s2mzpnq44y0rb-1777790640988.pdf
+data/documents/cmootxs7r0000nvgjmhgbanvx/cmopejaq8000f2mzpnho6t72z-1777790461825.pdf
+public/file.svg
+public/window.svg
+public/globe.svg
+public/next.svg
+public/vercel.svg
+coverage/favicon.png
+coverage/sort-arrow-sprite.png