aisman

Direct session 8, step 1: Add TempNumber dedup for sessions, steps and issues:
- DB migration: 007_TempNumbers.sql — adds SessionStepTempNumber and
  IssueTempNumber columns + indexes + extended property descriptions
- C# models: SessionStepTempNumber (SessionStep), IssueTempNumber (Issue),
  EF context config + HasIndex for both
- ProcessOutputBatch: match ds_ sessions by SessionTempNumber; store it on
  auto-create
- ProcessOutputCore: step dedup by SessionStepTempNumber — reuse + clear old
  SessionStepIssue rows on match, negative value on collision
- ProcessSingleIssueAsync: issue dedup by IssueTempNumber — reuse on title
  match, negative on collision, AnyAsync guard on SessionStepNewIssue insert
- Output file ds_000_008-01.json + catalog.json updated
- Instructions: added Type 1 (relates to) — minimum required rule for
  co-solving issues

Direct session 9, step 1: Update InsertAismanInstructions headerLine2 with read_file mention:
- Update headerLine2 in InsertAismanInstructions