docs: sync rule counts and feature lists with the new capabilities

Assisted-by: GLM 5.3 Flash

docs/ARCHITECTURE.md

@@ -100,8 +100,8 @@ are `unknown-instruction`, `operand-count`, `undefined-label`,
 `duplicate-label`, `missing-ret`, `missing-textflag-include`, `abi-argsize`,
 `unreachable-code`, `register-clobber`, `funcdata-pcdata`, `unused-label`,
 `invalid-textflag`, `stack-imbalance`, `register-width-mismatch`,
-`abi0-register-args`, `nonportable-register-name` and
-`unencodable-instruction`.  Every diagnostic carries a stable
+`abi0-register-args`, `nonportable-register-name`,
+`unencodable-instruction` and `reserved-register-write`.  Every diagnostic carries a stable
 code so callers can disable rules individually, and arch-specific rules switch
 off entirely when the target architecture cannot be inferred from the file name.
 
@@ -192,6 +192,10 @@ document store, republishes diagnostics on every change, and provides:
   (the frame size after the TEXT argument area), signature help (the callee's
   `// func` signature while the cursor is on a `CALL`), and code actions
   offering quick fixes for the `missing-ret` and `unused-label` diagnostics.
+- **document information**: pull diagnostics (`textDocument/diagnostic`),
+  #include document links (resolved against the document directory, then
+  `$GOROOT/pkg/include`) and folding ranges (one collapsible region per
+  TEXT function body).
 
 Semantic tokens are the key to editor-agnostic highlighting: the editor renders
 them from the standard LSP legend, so no editor-specific grammar is needed.
@@ -389,7 +393,10 @@ invokes a single function with user-supplied buffers (patterns: zero, ones,
 seq, or hex), printing the ABI0 argument block before and after the call,
 useful for partial functions (e.g. decoders) that crash on random input but
 should succeed on valid data; `--args name=value,...` supplies scalar
-arguments (decimal or `0x` hex) alongside the buffers.  `gasm verify
+arguments (decimal or `0x` hex) alongside the buffers.  `--save-corpus`
+records every input that crashes or mismatches as replayable JSON, and
+`--replay` re-runs saved entries in isolated child processes, reporting
+whether each reproduces.  `gasm verify
 --ground-truth` compares the
 assembled machine code byte-for-byte against `go tool asm` (relocation sites
 masked), reporting any encoding drift.