fix: grow the hint panel for long prose hints

A long prose hint (insert field-value hints, the parse.usage.*
synopses) wrapped but was clipped by the fixed one-row Hint panel,
hiding the most useful tail. The candidate list already scrolled
horizontally, so only prose was affected.

Pre-wrap the prose body and size the Hint panel to the wrapped line
count: one row by default, growing to a 3-row cap and reclaiming the
space when short, with an ellipsis backstop on the last row. Also
shorten the 299-char create-table usage synopsis to a terse one-liner
(the full grammar remains under `help`). ADR-0022 Amendment 5.

src/friendly/strings/en-US.yaml

@@ -486,7 +486,9 @@ parse:
   # placeholders. ADR-0009's surface conventions apply.
   usage:
     create_table: "create table <Name> with pk [<col>(<type>)[, ...]]"
-    sql_create_table: "create table [if not exists] <Name> (<col> <type> [not null] [unique] [primary key] [default <expr>] [check (<expr>)] [references <Parent>[(<col>)]], ... [, primary key (<col>, ...)] [, unique (<col>, ...)] [, check (<expr>)] [, [constraint <name>] foreign key (<col>) references <Parent>[(<col>)]])"
+    # Terse one-line synopsis (issue #12): the full grammar — every
+    # column- and table-level constraint — lives in `help.ddl.sql_create_table`.
+    sql_create_table: "create table [if not exists] <Name> (<col> <type> [constraints], ...)"
     sql_drop_table: "drop table [if exists] <Name>"
     sql_create_index: "create [unique] index [if not exists] [<Name>] on <Table> (<col>[, ...])"
     sql_drop_index: "drop index [if exists] <Name>"