Warnings on procedures that pass but should probably change

[jadamcrain]

A procedure can now record a warning on its result, next to its notes. A warning means the device passes the procedure but departs from the standard, or should probably change something. A note stays information, such as an answer the procedure allows as an alternative. Neither changes the outcome.

Report

• Each warning appears under a passed procedure's title as "⚠ Warning: …", in amber, before any notes.
• The counts at the top add "passed with warnings". "Passed" now counts only clean passes, so the counts still add up to the total.

CLI

• A run ends by listing each procedure that passed with warnings, with its warnings, even when a later procedure fails.
• Warnings don't change the exit code.

Results and library

• results.properties stores warnings as warning.1, warning.2, … as it does notes.
• The procedure's log shows each warning at warning level.
• ProcedureResult has a warnings field (default empty), and RunSummary.passedWithWarnings lists the procedures that passed with warnings. A pass keeps its notes and warnings in the partial summary of a run the harness or plugin aborts after it.

Reclassified (3.1r1)
These notes become warnings, with their text unchanged:

• 8.2.6: a select echoed with status 0 (complies with IEEE 1815-2012, not 1815-202x).
• 8.14.2j/m and 8.15.2: reads of events with time rejected with IIN2.1 (complies with 1815-2012 only).
• 8.24: analog output status kept only in 32 bits (not conformant at subset level 1 or 2).

All other notes stay notes. Where a description said such a result is "noted", it now says the procedure passes with a warning; that wording is the only change to -describe output.

Docs: automation.md, manual-testing.md and the 0.2.0 changelog entry.

Tests: results round-trip, the report's warning text, order, escaping and counts, the end-of-run list, a pass whose plugin then fails keeping its warnings, and each reclassified site recording a warning and not a note.