fix(parser): restore complete live lexer state and relex to EOF (#7294)

.ci/parser-facade/incremental.json

@@ -111,6 +111,24 @@
       "exit_condition": "Move any real scope projection to its semantic owner or remove.",
       "production_eligible": false
     },
+    {
+      "name": "diagnostics::LexRestartReport",
+      "classification": "incremental_parser",
+      "disposition": "review",
+      "owner": "#6704",
+      "target_owner": "#6982",
+      "exit_condition": "Retain as the diagnostics component of the canonical ReparseResult contract.",
+      "production_eligible": true
+    },
+    {
+      "name": "diagnostics::LexRestartStrategy",
+      "classification": "incremental_parser",
+      "disposition": "review",
+      "owner": "#6704",
+      "target_owner": "#6982",
+      "exit_condition": "Retain as the strategy component of the canonical ReparseResult contract.",
+      "production_eligible": true
+    },
     {
       "name": "diagnostics::ReparseResult",
       "classification": "incremental_parser",

.ci/parser-integration-targets.json

@@ -156,6 +156,23 @@
       "reason": "Prove recovery-aware ParseOutput is retained across incremental edits; previously run by a hardcoded command in run_parser_integration.py.",
       "disposition": "execute",
       "boundedness": "focused"
+    },
+    {
+      "id": "parser.incremental.lexer_restart",
+      "package": "perl-parser",
+      "target": "incremental_lexer_restart",
+      "features": [
+        "incremental"
+      ],
+      "no_default_features": false,
+      "cargo_args": [],
+      "test_args": [
+        "--test-threads=4"
+      ],
+      "owner": "#6704",
+      "reason": "Prove live lexer checkpoint restart preserves token and span parity across stateful edits.",
+      "disposition": "execute",
+      "boundedness": "focused"
     }
   ]
 }

.ci/parser-integration-targets.lock.json

@@ -19,6 +19,10 @@
       "id": "parser.incremental.integration",
       "invocation_sha256": "98bfa4782cd2d2cc0c011f5c8e8da509d8c54d40a117f43a6e5e8b463fa8c280"
     },
+    {
+      "id": "parser.incremental.lexer_restart",
+      "invocation_sha256": "2e3c092a71b04dfbad677cacae814bdbd88b0b9eabc5af53801ea4e01419a530"
+    },
     {
       "id": "parser.incremental.parse_output",
       "invocation_sha256": "f89586c06aa3283f287be63d2a7d898da759483bd471416e184e59b271452e2e"