add relevant output from claude that made the earlier plan

Let us run this as a new root cause investigation. Let's make a plan so that we can start with a new context for that. Would you write tasking/bl4b-hs-invstigation-plan.md to contain that based on everything we have learned in this session?

```

  The plan is structured to be self-contained for a fresh-context session:                                                                                                                                                                                

  What it tells the new session up front:                                                                                                                                                                                                                 

  - Andre's hypothesis verbatim                                   

  - Why it's already 80% confirmed (the directional-asymmetry table from the existing Galil command log — every BGE failure on positive PRE, the single negative succeeded)                                                                               

  - The smoking-gun observation: a 3-motor-step positive move (PRE=3) was refused, so it's not a "go further than the limit" issue, the controller has decided the axis is at the limit

  Six specific investigation tasks:                                                                                                                                                                                                                       

  1. Confirm HLS 0→1/1→0 transitions from archiver (gives exact trigger and clear times)                                                                                                                                                                  

  2. Find what was happening at exactly 23:35 (the proposed trigger moment)                                                                                                                                                                               

  3. Establish what cleared the limit at ~00:10 (operator action vs IOC restart vs passing event)                                                                                                                                                         

  4. Distinguish noise / cable / Galil bug / EPICS misconfig / physical contact (the autosave's DVAL=76 mm vs DHLM=250 mm already strongly suggests not physical contact)                                                                                 

  5. Look for prior occurrences (single event vs chronic)                                                                                                                                                                                                 

  6. Hardware inspection (after software work points at the right candidates)                                                                                                                                                                             

  Carried-forward context so the new session doesn't redo work:                                                                                                                                                                                           

  - hs axis assignment, MRES/ERES/DHLM/DLLM/RTRY/BDST values                                                                                                                                                                                              

  - The full Galil1 file-location table                                                                                                                                                                                                                   

  - Explicit "what to exclude from this investigation" — hs did NOT cause the tthd runaway; the two faults are distinct; hs and p_d are on different controllers so no common-mode failure                                                                

  - Pointer to relevant cross-project patterns in the parent CLAUDE.md (MSTA decoding, runtime-vs-substitutions, autosave archaeology)                                                                                                                    

  Bootstrap at the end: a ready-to-run archiver-query.sh command to pull the right PVs for the right window, with instructions for what to look at first.                                                                                                 

  Definition of done: the new report should answer 7 specific questions (when did HLS go hot, was the motor at the limit, proximate cause, when cleared, by whom, prior occurrences, recommended fix) and produce a *-Failure-Analysis.md + PDF following 

  the same template as the tthd report.                                                                                                                                                                                                                   

```

Claude made a plan [bl4b-hs-invstigation-plan.md]. We will start a new session and branch for all this, perhaps more persistent branch for beamline motion investigations.