chore: bump conformance pin to @xterm/headless@6.1.0-beta.216 and remove redundant DCS table entries

Remove four redundant r(0x1c, 0x20) transition table entries from DCS
states. These bytes are already covered by the executables range set
earlier for each state, so the entries were silently overwritten.
Aligns with upstream commit 80debafa.

Bump conformance pin from 6.1.0-beta.199 to 6.1.0-beta.216. No
behavioral changes — regenerated golden data is identical.

Fixes #26

Co-authored-by: Ona <no-reply@ona.com>

Author: ona-automations

conformance/package.json

@@ -6,6 +6,6 @@
     "generate": "node generate.mjs"
   },
   "dependencies": {
-    "@xterm/headless": "6.1.0-beta.199"
+    "@xterm/headless": "6.1.0-beta.216"
   }
 }

conformance/yarn.lock

@@ -2,7 +2,7 @@
 # yarn lockfile v1
 
 
-"@xterm/headless@6.1.0-beta.199":
-  version "6.1.0-beta.199"
-  resolved "https://registry.yarnpkg.com/@xterm/headless/-/headless-6.1.0-beta.199.tgz#cc5ea68420011dba5decb73dbd04c6a9fdea167a"
-  integrity sha512-7p1FEXBXBYeXySmoe7Mpta+XBrFcuBD/j9gNuM5SttWgGAh3InXYZgWbhrNTZE712CglfSOolmd0LzpQUnP5+g==
+"@xterm/headless@6.1.0-beta.216":
+  version "6.1.0-beta.216"
+  resolved "https://registry.yarnpkg.com/@xterm/headless/-/headless-6.1.0-beta.216.tgz#7b98a3ed0a31753511fe1e15cd7820521e30ac1c"
+  integrity sha512-HCut3ABwBv5zVUAB+5KVTW4svr/fCeVMW9xtaJIhmXZsNHOrhVFOGX7E2CYzRa8xdX/aI2JdTIhgLl8xjcHEoA==

parser_table.go

@@ -165,28 +165,24 @@ func buildVT500TransitionTable() *TransitionTable {
 	table.Add(0x50, ParserStateEscape, ParserActionClear, ParserStateDCSEntry)
 	table.AddMany(executables, ParserStateDCSEntry, ParserActionIgnore, ParserStateDCSEntry)
 	table.Add(0x7f, ParserStateDCSEntry, ParserActionIgnore, ParserStateDCSEntry)
-	table.AddMany(r(0x1c, 0x20), ParserStateDCSEntry, ParserActionIgnore, ParserStateDCSEntry)
 	table.AddMany(r(0x20, 0x30), ParserStateDCSEntry, ParserActionCollect, ParserStateDCSIntermediate)
 	table.AddMany(r(0x30, 0x3c), ParserStateDCSEntry, ParserActionParam, ParserStateDCSParam)
 	table.AddMany([]int{0x3c, 0x3d, 0x3e, 0x3f}, ParserStateDCSEntry, ParserActionCollect, ParserStateDCSParam)
 
 	// --- DCS ignore ---
 	table.AddMany(executables, ParserStateDCSIgnore, ParserActionIgnore, ParserStateDCSIgnore)
 	table.AddMany(r(0x20, 0x80), ParserStateDCSIgnore, ParserActionIgnore, ParserStateDCSIgnore)
-	table.AddMany(r(0x1c, 0x20), ParserStateDCSIgnore, ParserActionIgnore, ParserStateDCSIgnore)
 
 	// --- DCS param ---
 	table.AddMany(executables, ParserStateDCSParam, ParserActionIgnore, ParserStateDCSParam)
 	table.Add(0x7f, ParserStateDCSParam, ParserActionIgnore, ParserStateDCSParam)
-	table.AddMany(r(0x1c, 0x20), ParserStateDCSParam, ParserActionIgnore, ParserStateDCSParam)
 	table.AddMany(r(0x30, 0x3c), ParserStateDCSParam, ParserActionParam, ParserStateDCSParam)
 	table.AddMany([]int{0x3c, 0x3d, 0x3e, 0x3f}, ParserStateDCSParam, ParserActionIgnore, ParserStateDCSIgnore)
 	table.AddMany(r(0x20, 0x30), ParserStateDCSParam, ParserActionCollect, ParserStateDCSIntermediate)
 
 	// --- DCS intermediate ---
 	table.AddMany(executables, ParserStateDCSIntermediate, ParserActionIgnore, ParserStateDCSIntermediate)
 	table.Add(0x7f, ParserStateDCSIntermediate, ParserActionIgnore, ParserStateDCSIntermediate)
-	table.AddMany(r(0x1c, 0x20), ParserStateDCSIntermediate, ParserActionIgnore, ParserStateDCSIntermediate)
 	table.AddMany(r(0x20, 0x30), ParserStateDCSIntermediate, ParserActionCollect, ParserStateDCSIntermediate)
 	table.AddMany(r(0x30, 0x40), ParserStateDCSIntermediate, ParserActionIgnore, ParserStateDCSIgnore)
 	table.AddMany(r(0x40, 0x7f), ParserStateDCSIntermediate, ParserActionDCSHook, ParserStateDCSPassthrough)