Wire HP15-diatom SEM cache into community + delete wrong-DOI cache (#60)

Orphan curation pass:
- references_cache/DOI_10.3354_meps09894.md: refresh via the new
  publisher-meta scraper (Inter-Research exposes the SEM figure
  caption in their description meta tag even though Crossref has no
  abstract). Wire as a PARTIAL evidence item on the
  Transparent-Exopolymer-Particle-Enhancement interaction in
  Thalassiosira_Marinobacter_Marine_Snow_Coculture: gives the
  interaction a direct visual citation of HP15 attaching to
  T. weissflogii inside a chitin-containing fibre network, on top of
  the two PMID-based assay citations already there.
- Delete references_cache/DOI_10.1016_j.cej.2020.125159.md and its
  two CrossRef sidecars. The DOI was a typo - it points to an
  unrelated OLED chemistry paper. The real reference for the
  Chromium_Sulfur Cr(VI)/sulfur work is 10.1016/j.cej.2020.124801,
  which is already cached and cited. Keeping the wrong-paper cache
  around invites future mistakes.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: realmarcin

kb/communities/Thalassiosira_Marinobacter_Marine_Snow_Coculture.yaml

@@ -169,6 +169,16 @@ ecological_interactions:
     evidence_source: IN_VITRO
     snippet: TEP formation and phytoplankton aggregation
     explanation: Supports TEP formation and aggregation as measured outcomes in the interaction.
+  - reference: doi:10.3354/meps09894
+    supports: PARTIAL
+    evidence_source: IN_VITRO
+    snippet: a co-incubation sample containing the diatom Thalassiosira weissflogii (left)
+      and Marinobacter adhaerens HP15 embedded in a network of chitincontaining fibres
+      extruding from the diatom cell
+    explanation: SEM evidence of HP15 attaching to T. weissflogii within a chitin-containing
+      fibre network during co-incubation - direct visual documentation of the exopolymer
+      matrix this interaction is built around. Partial because the publicly available
+      excerpt is the figure caption rather than the methods/quantitative results.
 - name: Chemotaxis-Mediated Attachment
   description: >
     Chemotaxis and surface attachment functions in M. adhaerens contribute to

references_cache/DOI_10.1016_j.cej.2020.125159.md

@@ -10,7 +10,7 @@ authors:
 journal: Marine Ecology Progress Series
 year: '2012'
 doi: 10.3354/meps09894
-content_type: unavailable
+content_type: abstract_only
 ---
 
 # Effects of Marinobacter adhaerens HP15 on polymer exudation by Thalassiosira weissflogii at different N:P ratios
@@ -19,3 +19,5 @@ content_type: unavailable
 **DOI:** [10.3354/meps09894](https://doi.org/10.3354/meps09894)
 
 ## Content
+
+Scanning electron micrograph of a co-incubation sample containing the diatom Thalassiosira weissflogii (left) and Marinobacter adhaerens HP15 embedded in a network of chitincontaining fibres extruding from the diatom cell.