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"]),

src/friendly/strings/en-US.yaml

@@ -408,25 +408,6 @@ parse:
     import: "import <zip-path> [as <target>]"
     mode: "mode simple  |  mode advanced"
     messages: "messages  |  messages short  |  messages verbose"
-  # Single-token vocabulary (ADR-0021 §4, ADR-0024 §cleanup-pass).
-  # The per-keyword and per-punct entries collapsed when the
-  # walker became the source of truth — keyword wording is now
-  # produced verbatim as `` `<word>` `` by the parse-error
-  # formatter, sourced from the grammar tree's Word literals.
-  # What remains here is structural-class labels (identifier /
-  # number / string literal / flag / end of input) and the
-  # lex-error wordings, none of which are derivable from the
-  # grammar.
-  token:
-    identifier: "identifier"
-    number: "number"
-    string_literal: "string literal"
-    flag: "flag (--name)"
-    end_of_input: "end of input"
-    error:
-      unterminated_string: "unterminated string literal"
-      unknown_char: "unrecognised character `{found}`"
-      bad_flag: "malformed flag (bare `--`)"
 
 # ---- Project lifecycle event notes -----------------------------------
 project: