Session log + DFWDS Node port + Hoffman API uploader pipeline

Built the missing piece between the test datasheet pipeline and Dataforth's
new product API. End-to-end:

- Pulled DFWDS (Dataforth Web Datasheet System) VB6 source from
  AD1\Engineering\ENGR\ATE\Test Datasheets\DFWDS to local for analysis
- Decoded its filename validation: A-J prefix decodes (A=10..J=19), all-
  numeric WO# valid (no leading 0), anything else bad
- Ported the validation + move logic to Node (dfwds-process.js)
- Built bulk uploader (upload-delta.js) for Hoffman's Swagger API
  (POST /api/v1/TestReportDataFiles/bulk with OAuth client_credentials)

Sanitized 3 prior reference scripts (fetch-server-inventory, test-scenarios,
test-upload-two) to read CF_* env vars instead of hardcoded creds.

Live drain results:
- 897 files moved Test_Datasheets -> For_Web (all valid, no renames, no
  bad), DFWDS port summary in 1.1s
- Pushed entire For_Web (7,061 files) to Hoffman API in 49.7s @ 142/s:
  Created=803 Updated=114 Unchanged=6,144 Errors=0
- Server count: 489,579 -> 490,382 (+803 net new)

Also:
- Added clients/dataforth/.gitignore to exclude plaintext Oauth.txt note
- Added clients/instrumental-music-center/docs/2026-04-13-ticket-notes.md
  (ticket write-up of 2026-04-11/12/13 IMC1 RDS removal/SQL migration work)

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

projects/dataforth-dos/datasheet-pipeline/compute-delta.py

@@ -0,0 +1,74 @@
+"""Compare local For_Web serials vs server-side serials; emit delta list."""
+import os
+
+LOCAL = r"C:\Users\guru\AppData\Local\Temp\for_web_inventory.txt"
+SERVER = r"C:\Users\guru\AppData\Local\Temp\server_inventory.txt"
+DELTA_OUT = r"C:\Users\guru\AppData\Local\Temp\delta_to_upload.txt"
+
+# Load server set (case-sensitive exact; mirror what we'd POST as SerialNumber)
+server = set()
+with open(SERVER) as f:
+    for line in f:
+        s = line.strip()
+        if s:
+            server.add(s)
+
+# Also load a case-insensitive lookup just to see if anything only differs by case
+server_ci = {s.lower() for s in server}
+
+# Walk local inventory
+local_total = 0
+local_sns = set()
+path_by_sn = {}
+with open(LOCAL) as f:
+    for line in f:
+        parts = line.rstrip("\n").split("|")
+        if len(parts) < 4:
+            continue
+        full, sn, size, mtime = parts[0], parts[1], parts[2], parts[3]
+        local_total += 1
+        local_sns.add(sn)
+        path_by_sn[sn] = (full, int(size), mtime)
+
+# Diff
+missing_on_server = sorted(sn for sn in local_sns if sn not in server)
+missing_ci_only = sorted(sn for sn in local_sns if sn not in server and sn.lower() in server_ci)
+already_present = sorted(sn for sn in local_sns if sn in server)
+
+print(f"Local total: {local_total}")
+print(f"Local unique serials: {len(local_sns)}")
+print(f"Server total: {len(server)}")
+print(f"")
+print(f"Already on server (case-sensitive exact match): {len(already_present)}")
+print(f"Missing on server (case-sensitive):             {len(missing_on_server)}")
+print(f"    ...of which only differ by case:             {len(missing_ci_only)}")
+print(f"")
+
+# Write delta list (paths) to upload
+with open(DELTA_OUT, "w") as f:
+    for sn in missing_on_server:
+        full, size, mtime = path_by_sn[sn]
+        f.write(f"{sn}|{full}|{size}|{mtime}\n")
+
+print(f"Wrote delta list ({len(missing_on_server)} entries) -> {DELTA_OUT}")
+
+# Show sample of delta
+if missing_on_server:
+    print("\nFirst 10 missing SNs:")
+    for sn in missing_on_server[:10]:
+        full, size, mtime = path_by_sn[sn]
+        print(f"  {sn}  ({size} bytes, {mtime[:19]})")
+    print("\nLast 10 missing SNs:")
+    for sn in missing_on_server[-10:]:
+        full, size, mtime = path_by_sn[sn]
+        print(f"  {sn}  ({size} bytes, {mtime[:19]})")
+
+# Show counts by year-month for the delta
+from collections import Counter
+by_month = Counter()
+for sn in missing_on_server:
+    _, _, mtime = path_by_sn[sn]
+    by_month[mtime[:7]] += 1
+print("\nDelta by year-month:")
+for k in sorted(by_month):
+    print(f"  {k}: {by_month[k]}")