[KubaO]

Adds a Common Errors section to the Strings module's pages and a central Run-time Errors page, tb: page shortcuts and help add-in 1.1.0, and queues five twinBASIC defects found along the way.

• Run-time errors: a Discord reader asked which errors a procedure can raise, which no VB or VBA reference lists. The errors are data (errors/*.yml: the cases that raise each error, and the cases that must raise nothing), measured in twinBASIC 32-bit and VB6 on BETA 1010. They are written into each page's Common Errors section as number (decimal and VB hexadecimal), Err.Description and condition.
  • Tooling: scripts/errors.mjs has run (builds a probe per runtime and compares every case with the data), write (writes the sections) and messages (measures errors/messages.yml in both runtimes). check_errors.mjs keeps sections and data in step; it is test.bat's 29th step and runs in CI.
  • Run-time Errors page (/Reference/Run-time-Errors, in the book, page baseline 1503): every number from 1 to 65535 with a message of its own (88; twinBASIC and VB6 agree on all) and the HRESULTs the data names. Each has an anchor and a generated list of the pages that raise it.
  • Pages: ReDim and 28 of the 30 Strings pages, 339 cases, all agreeing in twinBASIC and VB6. Any error a Null argument raises is listed. A case where only VB6 raises (error: 0) is a NOTE only. Join and Filter of a Long or Double array are documented as an extension. VBA text that twinBASIC and VB6 both contradict, such as the vbUseCompareOption rows, is kept as <!-- VBA: --> comments.
  • WIP.Errors.md: the decisions, the design and how a batch runs. Next is batch 3, Conversion.
• Page shortcuts: shortcut: <Name> in a page's front matter lets any page link to it as [5](tb:Errors#5), from any folder and with no ../. The build writes the real URL. An unknown name, a name two pages claim and a tb: image source fail the build, and inside code the link is left as written. Errors is the first, and its anchors are the bare error numbers. Documented on the Authoring page.
• Help add-in 1.1.0: other add-ins' Ctrl and Alt shortcuts fire while it is loaded (the IDE alone does not run them), the help window follows the IDE's font size, and Ctrl+F finds text in the shortcut and panel-layout editors. The settings panel gets a box for each page-side fix. It now has a version and add-in/CHANGELOG.md; the Help_Settings pictures are retaken.
• Tools: every IDE the tools start runs with default settings, because launchIde answers GetIDESetting with "no saved value" in the page (tb-defaults.mjs). try-help-addin keeps the user's.
• Defects queued (5, BETA 1010): each has a reproducer under bugs/ with a VB6 side.
  • ReDim with an upper bound below the lower raises -2147467259, Unspecified error; VB6 raises 9.
  • A compare of vbDatabaseCompare raises no error in InStr, StrComp and Filter; VB6 raises 5.
  • InStr raises 5 for an invalid LCID when string1 or string2 is zero-length; VB6 raises nothing.
  • String with a character of Null raises 94; VB6 returns Null.
  • StrConv with vbWide, vbNarrow, vbKatakana or vbHiragana and an East Asian LCID raises 5 on a system whose locale is not East Asian; VB6 converts.