fix(ghidra): own Java prerequisite probes through final cleanup

Replace synchronous Java execution with bounded owned commands. Keep task-scoped readiness observations fresh across later tasks, defer target client prerequisites behind a closeable owner, and join doctor cancellation and cleanup.

Preserve completed physical failures across late cancellation, exact cleanup dependencies and partial observations. Admit target/profile inputs before probing and return typed factory failures instead of unavailable client wrappers.

Validation: 405 focused tests across 24 files, 2 explicit skips; 109 provider/doctor controls rerun after final admission refinement; check:fast and docs:check. Controlled macOS Java-shaped commands and public CLI/MCP workflows; no new JVM/Ghidra or Windows/Linux lifecycle verification.

Measured warm public doctor baseline/candidate: elapsed 0.447/1.223s, CPU 0.624/1.237s, sampled family RSS 379/529MB, reply tokens 3133/3133. Ownership adds cost; no performance improvement claimed. True cold, whole-agent and MCP costs unmeasured.

Refs #4561. Remaining installation file admission tracked in #4672.

docs/architecture.mermaid

@@ -26,6 +26,7 @@ graph TD
     end
 
     subgraph "Provider Layers"
+        PROVIDER_OWNERS["src/providers/<br/>shared deferred client and inspection owners<br/>exact cleanup retry and attributed failures"]
         PWNTOOLS["src/native/pwntools/ + src/native/pwndbg/<br/>BYO offline ELF/core adapters<br/>owned snapshots/Python and optional core-only GDB<br/>unchanged upstream parsers, ABI structures and mapping API"]
         WASM["src/wasm/<br/>caller-supplied WABT; immutable artifact inspection<br/>owned process supervision and retryable workspace cleanup"]
         EVM["src/evm/<br/>unchanged EVMole/WASM in bounded owned worker<br/>explicit carrier parsing and inferred interface adapter"]
@@ -138,6 +139,11 @@ graph TD
     GHIDRA --> GHIDRA_BRIDGE
     HOPPER --> PROCESS
     GHIDRA --> PROCESS
+    GHIDRA --> PROVIDER_OWNERS
+    APP --> PROVIDER_OWNERS
+    PROVIDER_OWNERS --> PROCESS
+    PROVIDER_OWNERS --> AUX
+    PROVIDER_OWNERS --> DOMAIN
     GHIDRA --> WINDOWS
     PROCESS --> WINDOWS
     WINDOWS --> WINDOWS_NATIVE