fix: collection dev-velocity scope + repo contributor count inflation (IN-1195)

Two data-quality bugs found during Collections v2 prod QA:

- issues_average_resolve_velocity and pull_requests_average_resolve_velocity
  only scoped by a single project (segmentId = segments_filtered), so a
  collection-scoped call returned null, which the Development tab rendered as
  'Avg. velocity: 0 seconds'. Add the collectionSlug branch
  (segmentId IN segments_filtered_by_collection), matching activities_filtered.

- repositories_populated_copy computed repo contributorCount as uniq(memberId)
  over ALL activity, counting stargazers and forkers as contributors. This
  inflated the projects-table Contributors column massively (OpenClaw showed
  483K vs a true ~46K; 404K were stargazers). Exclude type IN ('star','fork').

Verified against prod Tinybird: CNCF collection issue velocity now 8.74M s
(was null); OpenClaw contributorCount now 46,031 (was 483,139).

Claude-Session: https://claude.ai/code/session_014Fc86j8FLeWFAs3fDCQs38
Signed-off-by: Gašper Grom <gasper.grom@gmail.com>

Author: gaspergrom

services/libs/tinybird/pipes/issues_average_resolve_velocity.pipe

@@ -4,8 +4,11 @@ DESCRIPTION >
     - Only includes issues that have been closed (`isNotNull(closedAt)`) to ensure accurate velocity calculations.
     - Queries `issues_analyzed` directly for optimal performance using sorting key on `segmentId, channel, openedAt`.
     - Primary use case: displaying average issue resolution time metrics in development health dashboards.
+    - The pipe scopes data either to a single project (via `segments_filtered`) or to every project in a
+    collection (via `segments_filtered_by_collection`). Exactly one of `project`/`collectionSlug` must be given.
     - Parameters:
-    - `project`: Required string for project slug (e.g., 'k8s', 'tensorflow') - inherited from `segments_filtered`
+    - `project`: Project slug (e.g., 'k8s', 'tensorflow') - inherited from `segments_filtered`. Required unless `collectionSlug` is given.
+    - `collectionSlug`: Collection slug (e.g., 'cncf') - inherited from `segments_filtered_by_collection`. Required unless `project` is given.
     - `repos`: Optional array of repository URLs for filtering (e.g., ['https://github.com/kubernetes/kubernetes'])
     - `startDate`: Optional DateTime filter for issues opened after timestamp (e.g., '2024-01-01 00:00:00')
     - `endDate`: Optional DateTime filter for issues opened before timestamp (e.g., '2024-12-31 23:59:59')
@@ -17,7 +20,10 @@ SQL >
     SELECT round(avg(closedInSeconds)) AS "averageIssueResolveVelocitySeconds"
     FROM issues_analyzed
     WHERE
-        segmentId = (SELECT segmentId FROM segments_filtered) AND isNotNull(closedAt)
+        {% if defined(collectionSlug) %}
+            segmentId IN (SELECT segmentId FROM segments_filtered_by_collection)
+        {% else %} segmentId = (SELECT segmentId FROM segments_filtered)
+        {% end %} AND isNotNull(closedAt)
         {% if defined(repos) %}
             AND channel
             IN {{ Array(repos, 'String', description="Filter activity repo list", required=False) }}

services/libs/tinybird/pipes/pull_requests_average_resolve_velocity.pipe

@@ -5,8 +5,11 @@ DESCRIPTION >
     - Excludes Gerrit platform as it uses a different workflow model.
     - Queries `pull_requests_analyzed` directly for optimal performance using sorting key on `segmentId, channel, openedAt`.
     - Primary use case: displaying average PR resolution time metrics in development health dashboards.
+    - The pipe scopes data either to a single project (via `segments_filtered`) or to every project in a
+    collection (via `segments_filtered_by_collection`). Exactly one of `project`/`collectionSlug` must be given.
     - Parameters:
-    - `project`: Required string for project slug (e.g., 'k8s', 'tensorflow') - inherited from `segments_filtered`
+    - `project`: Project slug (e.g., 'k8s', 'tensorflow') - inherited from `segments_filtered`. Required unless `collectionSlug` is given.
+    - `collectionSlug`: Collection slug (e.g., 'cncf') - inherited from `segments_filtered_by_collection`. Required unless `project` is given.
     - `repos`: Optional array of repository URLs for filtering (e.g., ['https://github.com/kubernetes/kubernetes'])
     - `startDate`: Optional DateTime filter for PRs opened after timestamp (e.g., '2024-01-01 00:00:00')
     - `endDate`: Optional DateTime filter for PRs opened before timestamp (e.g., '2024-12-31 23:59:59')
@@ -18,10 +21,10 @@ SQL >
     SELECT round(avg(resolvedInSeconds)) AS "averagePullRequestResolveVelocitySeconds"
     FROM pull_requests_analyzed
     WHERE
-        segmentId = (SELECT segmentId FROM segments_filtered)
-        AND isNotNull(resolvedAt)
-        AND resolvedInSeconds > 0
-        AND platform != 'gerrit'
+        {% if defined(collectionSlug) %}
+            segmentId IN (SELECT segmentId FROM segments_filtered_by_collection)
+        {% else %} segmentId = (SELECT segmentId FROM segments_filtered)
+        {% end %} AND isNotNull(resolvedAt) AND resolvedInSeconds > 0 AND platform != 'gerrit'
         {% if defined(repos) %}
             AND channel
             IN {{ Array(repos, 'String', description="Filter activity repo list", required=False) }}

services/libs/tinybird/pipes/repositories_populated_copy.pipe

@@ -9,14 +9,19 @@ SQL >
 
 NODE repositories_populated_copy_contributor_org_counts
 DESCRIPTION >
-    Calculate contributor and organization counts per repository (channel)
+    Calculate contributor and organization counts per repository (channel).
+    Excludes 'star' and 'fork' activity: stargazers/forkers are engagement, not contributors,
+    and counting them inflated contributorCount massively for popular repos (e.g. OpenClaw showed
+    483K where the true contributor count is ~46K - 404K of those were stargazers). This mirrors
+    the "contributions only" semantics the widget pipes use via onlyContributions/activityTypes_filtered.
 
 SQL >
     SELECT
         channel,
         uniq(CASE WHEN memberId != '' THEN memberId ELSE NULL END) AS contributorCount,
         uniq(CASE WHEN organizationId != '' THEN organizationId ELSE NULL END) AS organizationCount
     FROM activityRelations_deduplicated_cleaned_bucket_union
+    WHERE type NOT IN ('star', 'fork')
     GROUP BY channel
 
 NODE repositories_populated_copy_first_commit