Clean up plugin build workflow and docs

README.md

@@ -24,14 +24,23 @@ engineering ADSP-2191 firmware.
 
 ## Plugin Status
 
-Currently decodes: NOP, IDLE, Type 1 (multifunction), Type 3
-(direct memory), Type 4 (compute + memory), Type 6/7 (immediate
-loads), Type 10/10a (jump/call), Type 17 (reg move), Type 20
-(RTS/RTI).
+The decoder now covers most ADSP-219x instruction types and has
+assembler verification for 34 of 37 documented opcode families.
 
-Work in progress: Type 9/9a (standalone compute), Type 11
-(DO UNTIL), Type 15 (shift), Type 18 (mode control), Type 25
-(saturate).
+Assembler-verified coverage includes:
+
+- Types 1, 3, 4, 6, 7, 8, 9, 9a, 10, 10a, 11, 12, 14, 15, 16,
+  17, 18, 19, 20, 21, 21a, 23, 24, 25, 26, 29, 30, 32, 33, 34,
+  35, 36, 37
+
+Structural-only coverage remains for:
+
+- Type 22 / 22a (2-word immediate data write)
+- Type 31 (IDLE)
+- Type 32a (DAG register store with transfer)
+
+For the current verification matrix and test inputs, see
+`r2plugin/TESTING.md`.
 
 ## Assembler