feat(miners): unbound OPEN issues when since is omitted (#27)

When `since` is provided, behavior is unchanged: OPEN created on/after,
CLOSED closed on/after — the scoring window.

When `since` is omitted, the response now returns all currently-OPEN
issues with no time bound and no CLOSED history. Callers asking for
"current open-issue load" no longer need a synthetic epoch-since
workaround that pulls a full all-time payload.

Lets the validator's open-issue spam-multiplier count old still-open
issues that fall outside the scoring lookback window — the gap called
out in entrius/gittensor#929 / PR #930.

Co-authored-by: anderdc <me@alexanderdc.com>

Author: anderdc

packages/das/src/api/miners/miners.controller.ts

@@ -37,21 +37,25 @@ export class MinersController {
   @ApiOperation({
     summary: "Issues authored by a miner",
     description:
-      "Returns every issue the miner has authored since the given date, " +
-      "including current labels with actor attribution and the PR number " +
-      "(if any) that solved the issue.",
+      "Returns issues the miner has authored, with current labels (actor " +
+      "attribution) and any solving PR. When `since` is provided, returns " +
+      "OPEN issues created on/after that date plus CLOSED issues closed " +
+      "on/after that date (scoring window). When `since` is omitted, " +
+      "returns all currently-OPEN issues with no time bound and no CLOSED " +
+      "history (open-issue load counting).",
   })
   @ApiParam({ name: "githubId", description: "GitHub user ID (numeric)" })
   @ApiQuery({
     name: "since",
     required: false,
     description:
-      "ISO timestamp. Defaults to 35 days ago (midnight UTC) if omitted.",
+      "ISO timestamp. When omitted, the response contains all currently-" +
+      "OPEN issues with no time bound and no CLOSED history.",
   })
   async getIssues(
     @Param("githubId") githubId: string,
     @Query("since") since?: string,
   ): Promise<unknown> {
-    return this.miners.getIssues(githubId, MinersService.resolveSince(since));
+    return this.miners.getIssues(githubId, since ?? null);
   }
 }

packages/das/src/api/miners/miners.service.ts

@@ -124,10 +124,10 @@ export class MinersService {
 
   async getIssues(
     githubId: string,
-    since: string,
+    since: string | null,
   ): Promise<{
     github_id: string;
-    since: string;
+    since: string | null;
     generated_at: string;
     issues: unknown[];
   }> {
@@ -208,7 +208,7 @@ export class MinersService {
       FROM issues i
       WHERE i.author_github_id = $1
         AND (
-          (i.state = 'OPEN'   AND i.created_at >= $2)
+          (i.state = 'OPEN' AND ($2::timestamptz IS NULL OR i.created_at >= $2))
           OR (i.state = 'CLOSED' AND i.closed_at >= $2)
         )
       ORDER BY i.created_at DESC