doc: publish 2026 roadmap for codescan

docs/doc-site/maintainers/ROADMAP.md

@@ -0,0 +1,43 @@
+---
+title: "Roadmap"
+description: "Let's share our plans."
+weight: 5
+---
+
+## What's next with this project?
+
+{{< mermaid align="center" zoom="true" >}}
+timeline
+    title Planned releases
+    section Q1 2026
+    ✅ v0.32.x (March 2026) : Repo carved out of go-swagger
+                    : relint
+                    : library setup (not env. sensitive)
+                    : go1.25+
+    section Q2 2026
+    ✅ v0.33.x (April 2026) : Reduced exposed interface
+                    : type array for parameters
+                    : new package layout (internal, layered)
+    ✅ v0.34.x (May 2026) : Grammar-based parser
+                    : Replace regexp-based parser by lexer+grammar
+                    : Fixed many parsing quirks
+    ✅ v0.35.x (June 2026) : Large bug-bashing
+                    : Documentation site
+                    : Fixes ~200+ go-swagger issues
+                    : All validations
+                    : Parser diagnostics
+                    : Name conflict handling & circular $ref, missing validations, ... 
+    🔶 v0.36.x (July 2026) : CLI & TUI / faster code scanner
+                    : Optimized incremental type scanner
+                    : more tunable knobs, new annotations
+                    : go doc filter, private comments, inner markdown
+    ⬜ v0.37.x (August 2026) : playground UI / decouple from `Spec`
+                    : Internal model
+                    : Discriminator / polymorphism discovery
+                    : More go-swagger backlog fixes & tunable knobs
+    section Q3 2026
+    🔍 v0.38.x (Sept 2026) : LSP & IDE integration
+                    : go1.26+
+    section Q4 2026
+    🔍 v0.39.x (Oct-Nov 2026) : OAI v3 support (tentative)
+{{< /mermaid >}}