Remove dead parse.token.* catalog entries

The 5 structural-class entries (identifier/number/string_literal/flag/
end_of_input) and 3 lex-error entries (bad_flag/unknown_char/
unterminated_string) were unreachable: ADR-0024 Phase F made the
walker render keyword wording verbatim and the lex errors never
surface through today's walker. Handoff-12 §2.1 kept them as a
conservative call; removed now per user request. Re-adding is cheap
if a future need arises.

src/friendly/keys.rs

@@ -196,22 +196,6 @@ pub const KEYS_AND_PLACEHOLDERS: &[(&str, &[&str])] = &[
     ("parse.usage.show_data", &[]),
     ("parse.usage.show_table", &[]),
     ("parse.usage.update", &[]),
-    // Single-token vocabulary (ADR-0021 §4). Phase F of
-    // ADR-0024 collapsed the per-keyword and per-punct catalog
-    // entries — the walker renders keyword wording verbatim via
-    // `format!("`{word}`")` rather than going through the catalog.
-    // What remains are the structural-class labels (identifier,
-    // number, string literal, flag, end of input) and the
-    // lex-error wordings, none of which are derivable from the
-    // grammar tree.
-    ("parse.token.end_of_input", &[]),
-    ("parse.token.error.bad_flag", &[]),
-    ("parse.token.error.unknown_char", &["found"]),
-    ("parse.token.error.unterminated_string", &[]),
-    ("parse.token.flag", &[]),
-    ("parse.token.identifier", &[]),
-    ("parse.token.number", &[]),
-    ("parse.token.string_literal", &[]),
     // ---- Project lifecycle event notes ----
     ("project.export_failed", &["error"]),
     ("project.export_ok", &["path"]),