chore: trim stale docs (roadmap, parity, plans, features, dev-path)

- Remove docs/ecosystem-roadmap.md (356 lines, internal roadmap)
- Remove docs/parity.md (115 lines, internal parity tracking)
- Remove docs/DEVELOPER-PATH.md (61 lines, internal product direction)
- Remove docs/features.md (272 lines, heavy feature catalog)
- Remove docs/plans/ (milestone plans, internal)
- Fix compatibility.md stale self-ref (./docs/versioning.md -> ./versioning.md)
- Update README.md and AGENTS.md refs to removed files

Author: Patel230

AGENTS.md

@@ -127,14 +127,12 @@ test: add coverage for guardian
 
 ### Adding a New Feature
 
-1. Check docs/features.md for the feature list and conventions
-2. Place code in the appropriate `internal/` package
-3. Follow existing patterns (e.g., context providers are pluggable)
-4. Add tests and update documentation
+1. Place code in the appropriate `internal/` package
+2. Follow existing patterns (e.g., context providers are pluggable)
+3. Add tests and update documentation
 
 ## File Organization Notes
 
-- `docs/features.md` — Complete feature reference with 100 features across 12 categories
 - `CONTRIBUTING.md` — PR process, commit conventions
 - `docs/` — Architecture details, security model, ecosystem message flow
 - `external/` — Ecosystem repo checkouts for `go.work` development

README.md

@@ -32,7 +32,7 @@
 
 hawk is an AI-powered coding agent that lives in your terminal. It reads your codebase, writes and edits files, runs tests, and manages git — all through natural language. Unlike IDE-bound tools, hawk works over SSH, in containers, and on any machine with a shell.
 
-**Developer path:** one machine, keychain credentials, local memory. Run `hawk path` to check readiness. See [docs/DEVELOPER-PATH.md](docs/DEVELOPER-PATH.md).
+**Developer path:** one machine, keychain credentials, local memory. Run `hawk path` to check readiness.
 
 - **Model-agnostic** — works with Claude, GPT-4, Gemini, DeepSeek, Ollama, and 75+ models through [eyrie](https://github.com/GrayCodeAI/eyrie)
 - **Zero CGO** — single static binary, cross-compiled for linux/darwin/windows on amd64/arm64
@@ -148,7 +148,7 @@ make path                    # Developer path verification
 make smoke                   # Build + quick verification script
 ```
 
-See [docs/DEVELOPER-PATH.md](docs/DEVELOPER-PATH.md) and [docs/SECURITY-DEVELOPER.md](docs/SECURITY-DEVELOPER.md).
+See [docs/SECURITY-DEVELOPER.md](docs/SECURITY-DEVELOPER.md).
 
 See [docs/ecosystem-message-flow.md](docs/ecosystem-message-flow.md) for how eyrie, yaad, and tok connect during a chat session.
 

docs/DEVELOPER-PATH.md

@@ -1,6 +1,6 @@
 # Compatibility Matrix
 
-This eco uses **independent SemVer per repo** (see [VERSIONING.md](./docs/versioning.md)).
+This eco uses **independent SemVer per repo** (see [VERSIONING.md](./versioning.md)).
 That gives each component its own release cadence, but raises an obvious
 question: *which combinations of versions are actually tested together?*