docs: fix ADR relative links in README

The ADRs are at java/docs/adr/, not java/sdk/docs/adr/. Fix the
relative links for ADR-006 and ADR-004.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 3a69f33e-eea6-4b8c-9ef0-8b4d56d53a9c

Author: edburns

java/README.md

@@ -308,7 +308,7 @@ Chain fluent modifiers to set tool options:
 - `.defer(ToolDefer)` — control deferred execution (`AUTO`, `NEVER`)
 - `.overridesBuiltInTool(boolean)` — shadow built-in tools
 
-For design context and decision rationale, see [ADR-006](sdk/docs/adr/adr-006-tool-definition-inline.md).
+For design context and decision rationale, see [ADR-006](docs/adr/adr-006-tool-definition-inline.md).
 
 ## Session Store
 
@@ -432,7 +432,7 @@ The processor uses standard JSR 269 annotation processing APIs for maximum porta
 | Local variable with experimental type (including `var` inference) | ❌ | Move the usage into a declaration the processor can see, or use the compiler flag |
 | Cast to experimental type | ❌ | Use the compiler flag for a whole-compilation opt-in |
 
-In practice, these gaps rarely matter: any meaningful use of an experimental SDK type almost always appears in a field declaration, method signature, or type hierarchy — all of which are caught. A purely inline expression with no declaration footprint (e.g., `session.rpc().experimental.foo().join()`) is the only case that would slip through. See [ADR-004](sdk/docs/adr/adr-004-copilotexperimental.md) for the design rationale.
+In practice, these gaps rarely matter: any meaningful use of an experimental SDK type almost always appears in a field declaration, method signature, or type hierarchy — all of which are caught. A purely inline expression with no declaration footprint (e.g., `session.rpc().experimental.foo().join()`) is the only case that would slip through. See [ADR-004](docs/adr/adr-004-copilotexperimental.md) for the design rationale.
 
 ### Example
 

java/sdk/src/main/java/com/github/copilot/ffi/SizeT.java

@@ -20,7 +20,7 @@
  * This class uses {@link Native#SIZE_T_SIZE} so JNA marshals the correct width
  * on every platform.
  */
-final class SizeT extends IntegerType {
+public final class SizeT extends IntegerType {
 
     /** Zero-valued instance; required by JNA for return-type instantiation. */
     public SizeT() {