ADR-0024 Phase E: replay end-to-end

Migrate `replay <path>` to the walker. Shape is
Choice(StringLit, BarePath); the StringLit branch handles the
quoted form (with the existing `''` escape), and BarePath
handles the unquoted form.

Per ADR-0024's path-bearing UX change (already shipped for
import / export in Phase A), bare `replay` paths terminate at
the first whitespace byte. Paths with spaces require the
quoted form. The legacy `try_parse_replay_with_bare_path`
source-slice helper in dsl/parser.rs is removed; the
chumsky-side replay branch in command_parser stays declared
but unreachable until Phase F sweeps the chumsky path.

Tests:
- 7 new walker-specific tests for replay: bare relative path,
  bare absolute path, quoted with whitespace, quoted with
  escaped quote, case-insensitive keyword, missing-path
  error, empty-quoted-path parses to empty (runtime layer
  rejects).
- Total: 844 passed, 0 failed, 1 ignored (was 838 / 1).
- cargo clippy --all-targets -- -D warnings clean.

src/dsl/grammar/data.rs

@@ -490,6 +490,36 @@ fn build_delete(path: &MatchedPath) -> Result<Command, ValidationError> {
     Ok(Command::Delete { table, filter })
 }
 
+// =================================================================
+// replay — `replay <bare-path>` | `replay '<path>'`
+// =================================================================
+//
+// Phase E (ADR-0024 §migration). The chumsky-side
+// `try_parse_replay_with_bare_path` source-slice helper is
+// retired here: walker BarePath consumes the unquoted form
+// (terminating at whitespace per the path-bearing UX change),
+// and StringLit consumes the quoted form. Paths with spaces
+// must use the quoted form — same UX that `import` / `export`
+// adopted in Phase A.
+
+const REPLAY_PATH_CHOICES: &[Node] = &[Node::StringLit, Node::BarePath];
+const REPLAY_PATH: Node = Node::Choice(REPLAY_PATH_CHOICES);
+
+fn build_replay(path: &MatchedPath) -> Result<Command, ValidationError> {
+    let payload = path
+        .items
+        .iter()
+        .find_map(|i| match &i.kind {
+            MatchedKind::StringLit | MatchedKind::BarePath => Some(i.text.clone()),
+            _ => None,
+        })
+        .ok_or_else(|| ValidationError {
+            message_key: "parse.error_wrapper",
+            args: vec![("detail", "missing path".to_string())],
+        })?;
+    Ok(Command::Replay { path: payload })
+}
+
 // =================================================================
 // CommandNodes
 // =================================================================
@@ -529,3 +559,12 @@ pub static DELETE: CommandNode = CommandNode {
     usage_id: Some("parse.usage.delete"),
     hint_mode: None,
 };
+
+pub static REPLAY: CommandNode = CommandNode {
+    entry: Word::keyword("replay"),
+    shape: REPLAY_PATH,
+    ast_builder: build_replay,
+    help_id: Some("data.replay"),
+    usage_id: Some("parse.usage.replay"),
+    hint_mode: None,
+};