projects.md: replace Comments column with 版本 (Std / Pro 3.x / Pro 2.x)

Comments 那列对工程"品质"信号弱（评论量主要看话题热度）；换成"版本"
列直接告诉读者每个项目源是哪种 EDA 格式 + 编辑器版本号。当前 15
个项目里 10 Std / 3 Pro 3.x / 2 Pro 2.x。

source_format 字段映射：
  easyeda-std        → Std
  easyeda-pro        → Pro 3.x
  easyeda-pro-legacy → Pro 2.x
  其它               → 透传

editor_version（如 6.5.43 / 3.2.91 / 2.1.40）作为子标签放第二行。

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

scripts/build_index.py

@@ -19,6 +19,17 @@ def fmt_mb(b: int) -> str:
     return f"{b / 1024 / 1024:.1f}"
 
 
+SOURCE_FORMAT_LABEL = {
+    "easyeda-std": "Std",
+    "easyeda-pro": "Pro 3.x",
+    "easyeda-pro-legacy": "Pro 2.x",
+    "kicad": "KiCad",
+    "altium": "Altium",
+    "eagle": "Eagle",
+    "other": "Other",
+}
+
+
 def collect() -> list[dict]:
     rows: list[dict] = []
     for meta in (REPO / "data" / "raw").rglob("metadata.json"):
@@ -38,6 +49,8 @@ def collect() -> list[dict]:
                 "files_count": len(files),
                 "files_bytes": bytes_total,
                 "local_dir": str(meta.parent.relative_to(REPO)),
+                "source_format": m.get("source_format"),
+                "editor_version": m.get("editor_version"),
             }
         )
     # sort by stars desc, tie-break by likes
@@ -71,12 +84,12 @@ def render(rows: list[dict]) -> str:
     w("> 按 **Stars 倒序**。Title → 源站；UUID → 本仓库对应目录。")
     w("")
     w(
-        "| # | Title | Author | License | "
-        "⭐ Stars | ❤️ Likes | 🍴 Forks | 👁 Views | 💬 Comments | Files | Size (MB) |"
+        "| # | Title | Author | License | 版本 | "
+        "⭐ Stars | ❤️ Likes | 🍴 Forks | 👁 Views | Files | Size (MB) |"
     )
     w(
-        "|---|-------|--------|---------|"
-        "--------:|---------:|---------:|---------:|------------:|------:|----------:|"
+        "|---|-------|--------|---------|------|"
+        "--------:|---------:|---------:|---------:|------:|----------:|"
     )
     for i, r in enumerate(rows, 1):
         m = r["metrics"]
@@ -89,10 +102,13 @@ def render(rows: list[dict]) -> str:
         author_link = f"[{r['author_display']}]({author_url})"
         uuid_short = r["uuid"][:8]
         dir_link = f"[`{uuid_short}…`](./{r['local_dir']}/)"
+        version_label = SOURCE_FORMAT_LABEL.get(r["source_format"] or "", "—")
+        if r["editor_version"]:
+            version_label = f"{version_label}<br><sub>{r['editor_version']}</sub>"
         w(
-            f"| {i} | {title_link}<br>{dir_link} | {author_link} | {r['license']} | "
+            f"| {i} | {title_link}<br>{dir_link} | {author_link} | {r['license']} | {version_label} | "
             f"{m.get('stars', 0):,} | {m.get('likes', 0):,} | {m.get('forks', 0):,} | "
-            f"{m.get('views', 0):,} | {m.get('comments', 0):,} | "
+            f"{m.get('views', 0):,} | "
             f"{r['files_count']} | {fmt_mb(r['files_bytes'])} |"
         )
     w("")