Add AD1 session data, memory entries for datasheet pipeline and security incident

- Imported AD1 Claude session files to clients/dataforth/session-logs/
- Created memory: project_datasheet_pipeline.md (full pipeline architecture)
- Created memory: project_dataforth_incident_2026-03-27.md (security incident + MFA)
- Updated MEMORY.md index
- Updated session log with AD1 pipeline rebuild findings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

clients/dataforth/session-logs/project_ctonwtxt_gap.md

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+---
+name: CTONWTXT.BAT not called in current AUTOEXEC
+description: Current AUTOEXEC.BAT v4.1 on DOS test stations calls CTONW.BAT (DAT files only) but NOT CTONWTXT.BAT (TXT datasheets). TXT files piling up in C:\STAGE on DOS machines.
+type: project
+---
+
+## The Gap (confirmed 2026-03-27 via John Lehman email)
+
+Current AUTOEXEC.BAT v4.1 (deployed 2026-03-12) boot sequence on DOS test stations:
+1. STARTNET.BAT — maps T: = \\D2TESTNAS\test, X: = \\D2TESTNAS\datasheets
+2. NWTOC.BAT — checks for software updates from network
+3. CTONW.BAT — uploads .DAT log files to T:\TS-XX\LOGS\ (only .DAT, NOT .TXT)
+4. menux — launches the test menu system
+
+Missing: CTONWTXT.BAT (copies C:\STAGE\*.txt to X: drive) is NOT called.
+ARCHBAT.BAT (which called NWtoC, CtoNW, AND CtoNWtxt) is also NOT called.
+John Lehman is still investigating where/if ARCHBAT was previously called.
+
+Peter Iliya found many .TXT files in C:\STAGE dating back to Sept 2025 on test machines.
+
+## CTONWTXT.BAT Logic (from email screenshots)
+- Checks if C:\STAGE\*.txt exists
+- Verifies network via %2\serve.sys
+- copy C:\STAGE\*.txt %2 (X: drive = \\D2TESTNAS\datasheets\Test_Datasheets)
+- DEL C:\STAGE\*.txt
+- Logs to C:\ATE\CtoNWtxt.log
+
+## Fix Options
+1. Add `CALL C:\BAT\CTONWTXT.BAT %MACHINE% X:` to AUTOEXEC.BAT (or to CTONW.BAT)
+2. Or integrate TXT transfer into the existing CTONW.BAT
+
+## Filename Encoding (from John's email)
+- 5-digit WO#: {WO#}-{dash#}.TXT (e.g., 12345-1.TXT)
+- 6-digit WO# (10xxxx-19xxxx): first 2 digits encoded A-J, then 4 digits + dash# (e.g., 123456 -> C3456-1.TXT)
+- Invalid WO#s get filename "BAD-{dash#}.TXT" with search name "BAD"
+
+**Why:** This is why X:\Test_Datasheets has a backlog and DFWDS hasn't been processing new files.
+**How to apply:** Need to fix CTONW.BAT or AUTOEXEC.BAT to include TXT transfer, then deploy to all 64 stations.