fix: dark-mode journal styles — light text on dark background

Updated all inline CSS to use light (#c8c8c8, #f0f0f0) text colours,
dark-transparent table cell backgrounds, and brighter accent colours
for readability in Foundry's dark journal viewer theme.

packs/rulebook/CURRENT

@@ -1 +1 @@
-MANIFEST-000007
+MANIFEST-000004

packs/rulebook/LOG

@@ -1,5 +1,7 @@
-2026/04/09-20:07:17.669098 f505cfeaefa0 Recovering log #6
-2026/04/09-20:07:17.669481 f505cfeaefa0 Recovering log #8
-2026/04/09-20:07:17.671948 f505cfeaefa0 Delete type=0 #6
-2026/04/09-20:07:17.672087 f505cfeaefa0 Delete type=3 #4
-2026/04/09-20:07:17.672205 f505cfeaefa0 Delete type=0 #8
+2026/04/09-20:22:14.769824 ee904929efa0 Recovering log #3
+2026/04/09-20:22:14.772324 ee904929efa0 Level-0 table #5: started
+2026/04/09-20:22:14.782149 ee904929efa0 Level-0 table #5: 87625 bytes OK
+2026/04/09-20:22:14.782412 ee904929efa0 Recovering log #11
+2026/04/09-20:22:14.786405 ee904929efa0 Delete type=0 #11
+2026/04/09-20:22:14.786554 ee904929efa0 Delete type=0 #3
+2026/04/09-20:22:14.786673 ee904929efa0 Delete type=3 #2

packs/rulebook/LOG.old

@@ -1,5 +1 @@
-2026/04/09-20:06:56.935848 f73a19eaefa0 Recovering log #3
-2026/04/09-20:06:56.936227 f73a19eaefa0 Level-0 table #5: started
-2026/04/09-20:06:56.938854 f73a19eaefa0 Level-0 table #5: 80630 bytes OK
-2026/04/09-20:06:56.940722 f73a19eaefa0 Delete type=0 #3
-2026/04/09-20:06:56.940753 f73a19eaefa0 Delete type=3 #2
+2026/04/09-20:21:51.640756 f406be7aefa0 Delete type=3 #1