Signups count by the venture's name, not only its slug (#159)

Co-authored-by: teahubxyz <boring+teahub@agentmail.to>

CHANGELOG.md

@@ -24,6 +24,7 @@
 - The second fix round escalates to a different model from the first round: `claude:opus` with the Claude seats (it was `venice:kimi code`, and grok 4.7 before that). `TIME_VENTURE_ESCALATE` overrides it.
 
 ### Added
+- A signup's Venture field matches the venture's slug, name, home folder or an old slug, ignoring case, spaces and punctuation. The field is typed by a person (Teahub does not prefill it from the link), who writes "Cartridge" or "Loot Drop", not `box-art-night`; those signups were not counted.
 - A worker's tool call that is cut off at the output limit, or arrives with malformed arguments, is an error the worker reads on its next step instead of a crash that throws the run away. The first Claude venture builds (time#148, #149) died on `'content'`: a whole launch page written in one `write_file` ran past the output limit and arrived with its path and no content. The error says so and asks for smaller files.
 - Ponytail on prod: a seat worker (and so the venture builder) carries Ponytail's rules in its system prompt: the smallest complete change, reuse before new code, a check for new logic, never cut validation, security or accessibility, and one closing line on what it skipped. Vendored from DietrichGebert/ponytail (MIT) at `.github/time/rules/ponytail.md`, upstream commit 09c434a. Reviewers, Astra and the venture board never get it (a coding ruleset distorts answers that aren't a diff). `TIME_PONYTAIL=off` turns it off. It ran on hb-5's seats since 2026-10-12; prod had never had it.
 - Time retries its own parked cards. A card parked on `error` or `stuck` with no open PR is dispatched again on the next beat, up to `TIME_AUTO_RETRY` times (default 1; 0 leaves it to a human), instead of waiting for a human `/time retry`; the beats carry `auto_retry`, a seat worker resumes the card's branch with half as many turns again (`TIME_WORKER_STEPS` x 1.5), and a card with an open PR still goes to review. Dry-run retries nothing. The `stuck` and `error` comments say what Time will do next.