Create Bitly campaign links once, tagged and in the right group

**Objective:** Create a bitlink for `{long-url}` in the group `{group-name}` (default: the account's default group), tagged `{tags}`, with a clear title, without creating a duplicate.

**Step 1: Validate the URL**

`{long-url}` must start with `https://` or `http://`. If it has no scheme, add `https://` and tell the user. If it starts with `http://`, warn that the destination is insecure and ask whether to continue.

**Step 2: Check for an existing link**

Call `bitly-get-bitlink` with `long-url.contains` set to the URL without its scheme. If an unarchived bitlink already points at the same destination, show it (link, title, tags, group-name, created-date) and ask whether to reuse it or create another. Stop until the user answers.

**Step 3: Resolve the group**

If `{group-name}` is given, call `bitly-get-group` with `name` set to it and `active` = true. Use that row's `group-id` as `group-guid`. If no group matches exactly, retry with `name.contains`, list the matches and ask. If `{group-name}` is empty, omit `group-guid`.

**Step 4: Confirm**

Propose a title if none was supplied (from the destination page's purpose, at most 60 characters). Show: long URL, title, tags (lowercase, comma-separated, no spaces), group. Ask the user to confirm.

**Step 5: Create**

Call `bitly-add-bitlink` once with `long-url`, `title`, `tags` and `group-guid` (when resolved).

**Step 6: Confirm the result**

Call `bitly-get-bitlink` with `long-url.contains` again and report the new short link, title, tags and group.

**Rules & Guidelines:**

* `bitly-add-bitlink` is the only write allowed, called once, after the confirmation in Step 4.
* Never call `bitly-update-bitlink` from this prompt, even to fix a tag on the link you found in Step 2.
* Do not pass `domain` unless the user names a branded domain.

**Validation:**

* If the create call fails, report the error verbatim and do not retry with different values.