Add batch plans for batches 6-7, 9-12, 16-17 (rounds 4-7)

Generated design docs and implementation plans via Codex for:
- Batch 6: Opts package-level functions
- Batch 7: Opts class methods + Reload
- Batch 9: Auth, DirStore, OCSP foundations
- Batch 10: OCSP Cache + JS Events
- Batch 11: FileStore Init
- Batch 12: FileStore Recovery
- Batch 16: Client Core (first half)
- Batch 17: Client Core (second half)

All plans include mandatory verification protocol and anti-stub guardrails.
Updated batches.md with file paths and planned status.

reports/current.md

@@ -1,6 +1,6 @@
 # NATS .NET Porting Status Report
 
-Generated: 2026-02-27 19:11:30 UTC
+Generated: 2026-02-27 19:56:19 UTC
 
 ## Modules (12 total)
 

reports/report_b928be4.md

@@ -0,0 +1,37 @@
+# NATS .NET Porting Status Report
+
+Generated: 2026-02-27 19:56:19 UTC
+
+## Modules (12 total)
+
+| Status | Count |
+|--------|-------|
+| verified | 12 |
+
+## Features (3673 total)
+
+| Status | Count |
+|--------|-------|
+| deferred | 2377 |
+| n_a | 24 |
+| stub | 1 |
+| verified | 1271 |
+
+## Unit Tests (3257 total)
+
+| Status | Count |
+|--------|-------|
+| deferred | 2640 |
+| n_a | 187 |
+| verified | 430 |
+
+## Library Mappings (36 total)
+
+| Status | Count |
+|--------|-------|
+| mapped | 36 |
+
+
+## Overall Progress
+
+**1924/6942 items complete (27.7%)**