no_name_idea_safe_warning

A top-level nameless curly-brace block — `{... }` with no idea name — must not take down the parser or the language server workspace.
Parse the block as a recoverable anonymous top-level element, emit a descriptive warning that a name is required before `{`, and continue so later ideas, imports, and links still work.
Nameless blocks inside parenthesized lists remain valid list items per lists; only top-level nameless blocks warn.
Related recovery posture: import_error_recovery. Block shape: block_idea. Fenced examples must stay opaque per code_snippets so braces inside snippets cannot desync structural depth.
Non-termination ( lex / parse never finishes ) is a different failure mode: parse_budget_timeout.

Status: done

Interactive page: no_name_idea_safe_warning