Remove unverified special issue data, fix DBLP entity decoding

The two special_issues entries were proof-of-concept data and could not be
corroborated: no TPDS "Edge AI Systems" or open FGCS "Serverless Computing
at the Edge" call is findable, and both named real researchers as guest
editors. Removed rather than corrected — nothing verifiable exists to
replace them with. No open special issue was found at any tracked journal,
so the field stays absent until a real CFP appears.

Audited the rest of the data while there. All 39 candidate pools come from
DBLP and all 471 digested papers reconcile against them, so the paper set
is sound. Three defects surfaced:

- DBLP returns HTML-escaped text and fetch_papers never decoded it, so 136
  entities sat in the cached pools and "Theodore Y. Ts'o" reached the
  published ATC-2024 digest. Decoded at the fetch boundary and cleaned the
  existing files through the YAML parser.
- SC event_dates recorded the exhibition window (Nov 17-19) instead of the
  conference (Nov 15-20); EuroSys ran a day long (Apr 19-24 vs 19-23).
  Both verified against the official sites, which also confirm every
  SC, EuroSys and OSDI submission deadline is exact.
- TC-2025 digest carried a paraphrased title, now matching DBLP.

EuroSys only records its spring cycle; the fall cycle has no home in the
one-deadline-per-venue schema.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

site/data/cloud-edge/papers/TPDS-2025-candidates.yaml

@@ -93,8 +93,8 @@ papers:
   dblp_key: journals/tpds/BoukhariDKPSS25
   venue_name: IEEE Trans. Parallel Distributed Syst.
   pages: 1666-1679
-- title: A Note on "AESM2 Attribute-Based Encrypted Search for Multi-Owner and
-    Multi-User Distributed Systems"
+- title: A Note on "AESM2 Attribute-Based Encrypted Search for Multi-Owner and Multi-User
+    Distributed Systems"
   authors:
   - Zhengjun Cao
   year: '2025'
@@ -566,7 +566,7 @@ papers:
   dblp_key: journals/tpds/HuangHKY25
   venue_name: IEEE Trans. Parallel Distributed Syst.
   pages: 2693-2705
-- title: Critique of "Productivity, Portability, Performance Data-Centric Python"
+- title: Critique of "Productivity, Portability, Performance Data-Centric Python"
     by SCC Team From Sun Yat-sen University
   authors:
   - Han Huang
@@ -1146,8 +1146,8 @@ papers:
   dblp_key: journals/tpds/LiuZLYLLCZ25
   venue_name: IEEE Trans. Parallel Distributed Syst.
   pages: 1634-1650
-- title: 'Analysis and Reproducibility of "Productivity, Portability, Performance:
-    Data-Centric Python"'
+- title: 'Analysis and Reproducibility of "Productivity, Portability, Performance:
+    Data-Centric Python"'
   authors:
   - Christopher Lompa
   - Piotr Luczynski
@@ -1869,8 +1869,8 @@ papers:
   dblp_key: journals/tpds/WangWZLFD25
   venue_name: IEEE Trans. Parallel Distributed Syst.
   pages: 2549-2565
-- title: A Collaborative Service Composition Approach Considering Providers'
-    Self-Interest and Minimal Service Sharing
+- title: A Collaborative Service Composition Approach Considering Providers' Self-Interest
+    and Minimal Service Sharing
   authors:
   - Xiao Wang 0097
   - Hanchuan Xu
@@ -2205,7 +2205,7 @@ papers:
   dblp_key: journals/tpds/YanXZLDCSL25
   venue_name: IEEE Trans. Parallel Distributed Syst.
   pages: 1955-1971
-- title: 'Critique of "Productivity, Portability, Performance: Data-Centric Python"
+- title: 'Critique of "Productivity, Portability, Performance: Data-Centric Python"
     by SCC Team From Zhejiang University'
   authors:
   - Zihan Yang 0004