diff --git a/.env.example b/.env.example
index db5a7ea25..3dc54856e 100644
--- a/.env.example
+++ b/.env.example
@@ -34,6 +34,10 @@ REDIS_URL=redis://localhost:6379
 # Max connections in the relay's shared Redis pool (default 16).
 # BUZZ_REDIS_POOL_SIZE=16
 
+# Max connections in each of the relay's Postgres pools — writer and, when
+# READ_DATABASE_URL is set, reader (default 50).
+# BUZZ_DB_POOL_SIZE=50
+
 # -----------------------------------------------------------------------------
 # Typesense (search)
 # -----------------------------------------------------------------------------
@@ -105,7 +109,10 @@ RELAY_URL=ws://localhost:3000
 # -----------------------------------------------------------------------------
 # Logging / Tracing
 # -----------------------------------------------------------------------------
-RUST_LOG=buzz_relay=debug,buzz_db=debug,buzz_auth=debug,buzz_pubsub=debug,tower_http=debug
+RUST_LOG=buzz_relay=debug,buzz_datastore=info,buzz_db=debug,buzz_auth=debug,buzz_pubsub=debug,tower_http=debug
+# Optional OpenTelemetry-only target filter. This is deliberately independent
+# from RUST_LOG so log verbosity changes cannot break trace parentage.
+# BUZZ_OTEL_FILTER=buzz_relay=info,buzz_datastore=info
 
 # OTLP tracing endpoint (optional — leave unset to disable)
 # OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4317
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 31080652e..52f21b28b 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -1,6 +1,8 @@
 name: Docker image
 
-# Builds and publishes the public Buzz relay image as ghcr.io/block/buzz.
+# Builds and publishes the public Buzz relay images as ghcr.io/block/buzz.
+# Normal tags contain stripped binaries; matching debug-* tags contain the same
+# optimized binaries with line-table debug information for native profilers.
 #
 # Strategy: each architecture builds on its native runner (ubuntu-24.04 for
 # amd64, ubuntu-24.04-arm for arm64), pushes to GHCR by digest, then a final
@@ -15,8 +17,10 @@ name: Docker image
 #
 # Triggers:
 #   - push to main           → :main + :sha-<7>
+#                              + :debug-main + :debug-sha-<7>
 #   - push tags relay-v*.*.* → :{version} + :{major}.{minor} + :{major}
-#                              (+ :latest for stable, NOT for prereleases)
+#                              + matching :debug-* tags
+#                              (+ :latest/:debug-latest for stable releases)
 #   - pull_request           → build only (no push), cache stays warm
 #   - workflow_dispatch      → manual relay-tag rescue at the tag itself
 #
@@ -95,10 +99,6 @@ jobs:
             runner: ubuntu-24.04-arm
             arch: arm64
 
-    outputs:
-      # Used downstream by `merge` to stitch the manifest.
-      version: ${{ steps.meta.outputs.version }}
-
     steps:
       - name: Checkout
         uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6
@@ -163,12 +163,13 @@ jobs:
             org.opencontainers.image.description=WebSocket relay server for the Buzz communications platform
             org.opencontainers.image.licenses=Apache-2.0
 
-      - name: Build and push by digest
-        id: build
+      - name: Build and push release image by digest
+        id: build-release
         uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
         with:
           context: .
           file: ./Dockerfile
+          target: runtime
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
           # Push by digest, not by tag — the merge job assembles the tags
@@ -180,25 +181,49 @@ jobs:
           cache-to: |
             ${{ (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) && format('type=registry,ref={0}-buildcache:{1},mode=max,compression=zstd', env.IMAGE_NAME, matrix.arch) || '' }}
 
-      - name: Export digest
+      - name: Build and push debug image by digest
+        id: build-debug
+        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf  # v7.2.0
+        with:
+          context: .
+          file: ./Dockerfile
+          target: runtime-debug
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=${{ github.event_name != 'pull_request' }}
+          cache-from: |
+            type=registry,ref=${{ env.IMAGE_NAME }}-buildcache:${{ matrix.arch }}
+
+      - name: Export release and debug digests
         if: github.event_name != 'pull_request'
         env:
-          DIGEST: ${{ steps.build.outputs.digest }}
+          RELEASE_DIGEST: ${{ steps.build-release.outputs.digest }}
+          DEBUG_DIGEST: ${{ steps.build-debug.outputs.digest }}
         run: |
-          mkdir -p /tmp/digests
-          touch "/tmp/digests/${DIGEST#sha256:}"
+          mkdir -p /tmp/digests-release /tmp/digests-debug
+          touch "/tmp/digests-release/${RELEASE_DIGEST#sha256:}"
+          touch "/tmp/digests-debug/${DEBUG_DIGEST#sha256:}"
 
-      - name: Upload digest
+      - name: Upload release digest
         if: github.event_name != 'pull_request'
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
         with:
-          name: digests-${{ matrix.arch }}
-          path: /tmp/digests/*
+          name: digests-release-${{ matrix.arch }}
+          path: /tmp/digests-release/*
+          if-no-files-found: error
+          retention-days: 1
+
+      - name: Upload debug digest
+        if: github.event_name != 'pull_request'
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: digests-debug-${{ matrix.arch }}
+          path: /tmp/digests-debug/*
           if-no-files-found: error
           retention-days: 1
 
   merge:
-    name: Merge multi-arch manifest
+    name: Merge ${{ matrix.variant }} multi-arch manifest
     if: github.event_name != 'pull_request'
     runs-on: ubuntu-24.04
     needs: build
@@ -208,13 +233,21 @@ jobs:
       packages: write    # push the merged manifest
       id-token: write    # OIDC for provenance attestation on the manifest
       attestations: write
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - variant: release
+            tag_prefix: ""
+          - variant: debug
+            tag_prefix: debug-
 
     steps:
       - name: Download all per-arch digests
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
         with:
           path: /tmp/digests
-          pattern: digests-*
+          pattern: digests-${{ matrix.variant }}-*
           merge-multiple: true
 
       - name: Set up Docker Buildx
@@ -237,9 +270,12 @@ jobs:
           # the build job's `meta` step for why match=^relay-v(.*)$, why
           # value=${{ inputs.version }} carries the rescue-dispatch version,
           # and why :latest is left to flavor.latest=auto.
+          flavor: |
+            latest=auto
+            prefix=${{ matrix.tag_prefix }},onlatest=true
           tags: |
             type=ref,event=branch,enable=${{ github.event_name != 'workflow_dispatch' || inputs.version == '' }}
-            type=sha,prefix=sha-,format=short,enable=${{ github.event_name != 'workflow_dispatch' || inputs.version == '' }}
+            type=sha,prefix=${{ matrix.tag_prefix }}sha-,format=short,enable=${{ github.event_name != 'workflow_dispatch' || inputs.version == '' }}
             type=semver,pattern={{version}},match=^relay-v(.*)$,value=${{ inputs.version }}
             type=semver,pattern={{major}}.{{minor}},match=^relay-v(.*)$,value=${{ inputs.version }}
             type=semver,pattern={{major}},match=^relay-v(.*)$,value=${{ inputs.version }}
@@ -284,11 +320,12 @@ jobs:
       - name: Summary
         env:
           IMAGE_NAME: ${{ env.IMAGE_NAME }}
+          VARIANT: ${{ matrix.variant }}
           MERGED_DIGEST: ${{ steps.manifest.outputs.digest }}
           META_TAGS: ${{ steps.meta.outputs.tags }}
         run: |
           {
-            echo "### Published \`${IMAGE_NAME}\`"
+            echo "### Published \`${IMAGE_NAME}\` (${VARIANT})"
             echo
             echo "**Digest:** \`${MERGED_DIGEST}\`"
             echo
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 122393650..cfd3b16d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,59 @@
 # Changelog
 
+## v0.5.0
+
+- feat(invites): add use-limited invite links ([#3141](https://github.com/block/buzz/pull/3141)) ([`d500c2d5c`](https://github.com/block/buzz/commit/d500c2d5cf5d9aabe0ca4ebebfcafdbe5f5b7fd3))
+- fix(node): bump Buzz-supplied Node runtimes past OpenClaw's >=24.15.0 floor ([#3218](https://github.com/block/buzz/pull/3218)) ([`98a7b1334`](https://github.com/block/buzz/commit/98a7b1334823ee0be3e3fa5cab7a2e349e438dab))
+- fix(desktop): preserve thread anchor through layout reflow ([#3212](https://github.com/block/buzz/pull/3212)) ([`9810d8545`](https://github.com/block/buzz/commit/9810d8545937329f229ff40d8a19edc9e3e325c1))
+- feat(search): parse from:/in:/after:/before: and pass them in the filter ([#2871](https://github.com/block/buzz/pull/2871)) ([`cb2a265b5`](https://github.com/block/buzz/commit/cb2a265b5399426e808461c1a16713754c593258))
+- fix(desktop): fetch join policies through native networking ([#2862](https://github.com/block/buzz/pull/2862)) ([`0019f8076`](https://github.com/block/buzz/commit/0019f80765e96f056e81b57789b8b5fb80936f72))
+- fix(desktop): republish agent identity records when a persona rename propagates ([#2607](https://github.com/block/buzz/pull/2607)) ([`7ca0bbd94`](https://github.com/block/buzz/commit/7ca0bbd946fd82a7008132f94d069a97bb53f94b))
+- fix(desktop): keep project Inbox previews compact ([#3193](https://github.com/block/buzz/pull/3193)) ([`de1396050`](https://github.com/block/buzz/commit/de13960505fd798070e177cb33b1663100ac06bb))
+- Inbox refactor ([#2045](https://github.com/block/buzz/pull/2045)) ([`2bd4c24b7`](https://github.com/block/buzz/commit/2bd4c24b71335e7ce272ec6de6491f7f37f4b20d))
+- Fix composer selection formatting and drop overlay ([#3172](https://github.com/block/buzz/pull/3172)) ([`99da5b7eb`](https://github.com/block/buzz/commit/99da5b7ebb19e26453e075bfb949672122b31be3))
+- Refine pending message status ([#3153](https://github.com/block/buzz/pull/3153)) ([`75588eaff`](https://github.com/block/buzz/commit/75588eaff2354d620e554c055b80ec83735ddb0a))
+- fix(desktop): recover full local storage on startup ([#3182](https://github.com/block/buzz/pull/3182)) ([`174c38e4b`](https://github.com/block/buzz/commit/174c38e4bd1ed8498641546bc4fcb6d5a4c9cede))
+- fix(desktop): keep collapsed table separators out of spoilers ([#3169](https://github.com/block/buzz/pull/3169)) ([`4d8b676bb`](https://github.com/block/buzz/commit/4d8b676bb283a1917cec5850c3b7327fe122b0c1))
+- feat(desktop): redesign agent runtime settings ([#3093](https://github.com/block/buzz/pull/3093)) ([`d98da7389`](https://github.com/block/buzz/commit/d98da7389e60cfbd79b219aa411449fe2e53a18a))
+- fix(desktop): use forward slashes for git credential.helper on Windows ([#3023](https://github.com/block/buzz/pull/3023)) ([`899531684`](https://github.com/block/buzz/commit/8995316844f7ad50552fbae67fbd35119262796f))
+- chore(desktop): add AgentCreationPreview file-size override to unblock main CI ([#3154](https://github.com/block/buzz/pull/3154)) ([`b92a1f4bf`](https://github.com/block/buzz/commit/b92a1f4bf400e7da5ab7a010cdd81a69497d8191))
+- fix(desktop): make the test loader work on Windows ([#2758](https://github.com/block/buzz/pull/2758)) ([`8bb43d519`](https://github.com/block/buzz/commit/8bb43d51912894553f2670b2d285a96cf09cd472))
+- fix(desktop): make lint and unit-test gates work on Windows ([#2943](https://github.com/block/buzz/pull/2943)) ([`545bb46b8`](https://github.com/block/buzz/commit/545bb46b824a3fbf4401062f03b72531d832ebb9))
+- feat(desktop): add search to agent emoji picker ([#2630](https://github.com/block/buzz/pull/2630)) ([`313f793c8`](https://github.com/block/buzz/commit/313f793c8753d413c22ff8edfe420d5ee78708bc))
+- fix(desktop): keep identity key help dialog readable in dark mode ([#2854](https://github.com/block/buzz/pull/2854)) ([`be275cfc6`](https://github.com/block/buzz/commit/be275cfc6c7b80fe43e9d66c6d14b6d2bbe58a10))
+- feat(acp): title agent sessions from the agent and channel name ([#3028](https://github.com/block/buzz/pull/3028)) ([`f2fe3b63c`](https://github.com/block/buzz/commit/f2fe3b63c21be55907175715c076cd3a9195b74d))
+- feat(git): use agent display name as git author name ([#3040](https://github.com/block/buzz/pull/3040)) ([`18eef633d`](https://github.com/block/buzz/commit/18eef633d88ac465c61d98f12655fbf51dc3ca44))
+- fix(deps): bump nostr to 0.44.6 for RUSTSEC-2026-0216 (NIP-44 remote DoS) ([#3135](https://github.com/block/buzz/pull/3135)) ([`31e2de196`](https://github.com/block/buzz/commit/31e2de1966672e73e026af3c54f3a1a9a2f5e103))
+- fix(desktop): read the newest pair-scoped harness log ([#3134](https://github.com/block/buzz/pull/3134)) ([`654f38490`](https://github.com/block/buzz/commit/654f384906b5c720a60a199d85031a6f1cb6efc9))
+- feat(desktop): handle project work from Inbox ([#3117](https://github.com/block/buzz/pull/3117)) ([`c5c4f390b`](https://github.com/block/buzz/commit/c5c4f390b6713256e2efb8394c59823ebad73db6))
+- fix(desktop): clarify identity key button when key exists ([#2357](https://github.com/block/buzz/pull/2357)) ([`87b3fcd3c`](https://github.com/block/buzz/commit/87b3fcd3c0131683569dd4268b099d18b25dcd5e))
+- Restore Goose and Buzz Agent to onboarding harness selection ([#2731](https://github.com/block/buzz/pull/2731)) ([`7fc0cc82d`](https://github.com/block/buzz/commit/7fc0cc82db4d9dced9c258bbe8b530164a832a77))
+- fix(desktop): render rich project work item content ([#3100](https://github.com/block/buzz/pull/3100)) ([`afb272bb7`](https://github.com/block/buzz/commit/afb272bb7b8d7d45d7de676fa97dcd5a8eefacc7))
+- feat(acp): bring your own harness (BYOH) — generic ACP runtime seam + settings gallery ([#2773](https://github.com/block/buzz/pull/2773)) ([`95fdf9788`](https://github.com/block/buzz/commit/95fdf978800982389b120c66ff5e766d785419c7))
+- feat(desktop): use collective mesh routing for Auto ([#2825](https://github.com/block/buzz/pull/2825)) ([`16d4ec335`](https://github.com/block/buzz/commit/16d4ec335e210295a9d9f77f36c1e85a18b6814a))
+- fix(desktop): strip legacy baked team instructions from stored prompts ([#3035](https://github.com/block/buzz/pull/3035)) ([`aee631448`](https://github.com/block/buzz/commit/aee63144843854ee32ed9d36a2e7511c82ddc6b0))
+- feat(agents): lower default agent parallelism from 24 to 10 ([#3038](https://github.com/block/buzz/pull/3038)) ([`5d8ede446`](https://github.com/block/buzz/commit/5d8ede446f8fdc48146fe56d389cab6bf3500f92))
+- Polish community rail and mobile pairing ([#2972](https://github.com/block/buzz/pull/2972)) ([`e6c90bb7c`](https://github.com/block/buzz/commit/e6c90bb7c430d1b2af16508b634f9a5283b7fa3b))
+- fix(desktop): remove bundled libsystemd from AppImage ([#2353](https://github.com/block/buzz/pull/2353)) ([`a31fc4d2f`](https://github.com/block/buzz/commit/a31fc4d2f35d51cdf45ff8c61fc3a07f49c665e8))
+- fix(desktop): make agent definition authoritative for model/provider/prompt ([#1968](https://github.com/block/buzz/pull/1968)) ([`8c0e8cb16`](https://github.com/block/buzz/commit/8c0e8cb1656b04ad269bce3c2deeda2a943ae78a))
+- chore(desktop): delete dead persona catalog UI cluster ([#2886](https://github.com/block/buzz/pull/2886)) ([`8e67cf399`](https://github.com/block/buzz/commit/8e67cf399d0291bcdbc69cd0402983ca030f05bb))
+- fix(desktop): surface install failures hidden by curl-pipe exit codes ([#2892](https://github.com/block/buzz/pull/2892)) ([`166c6655e`](https://github.com/block/buzz/commit/166c6655e8bca87d83ad60c087fb70a32a026baf))
+- Refactor managed-agent runtime into cohesive modules ([#2974](https://github.com/block/buzz/pull/2974)) ([`74b63e184`](https://github.com/block/buzz/commit/74b63e1846212af6e6751a62cfc631f74b1dfe07))
+- fix(desktop): make Linux AppImage GStreamer work on non-Debian distros ([#2176](https://github.com/block/buzz/pull/2176)) ([`cc6c4d347`](https://github.com/block/buzz/commit/cc6c4d3471629fad018bcf645f9471a01b9ffe2f))
+- refactor(desktop): remove Agent directory section from Agents page ([#2290](https://github.com/block/buzz/pull/2290)) ([`5d1233e84`](https://github.com/block/buzz/commit/5d1233e841b0efa91470bb45467b2c8e4284ebf6))
+- fix(desktop): enable arboard Wayland backend so Linux copies reach the Wayland clipboard ([#2904](https://github.com/block/buzz/pull/2904)) ([`ab7aa8b12`](https://github.com/block/buzz/commit/ab7aa8b1200710dbc2d7a8661ed5aab95c4199c1))
+- fix(desktop): supervise and re-arm relay-mesh runtime ([#2823](https://github.com/block/buzz/pull/2823)) ([`aa51dab9d`](https://github.com/block/buzz/commit/aa51dab9da5fef7054d03cf1a1207986d0000684))
+- fix(agents): run live Databricks discovery instead of the fallback list ([#2890](https://github.com/block/buzz/pull/2890)) ([`8eb6e3eb6`](https://github.com/block/buzz/commit/8eb6e3eb601174249642373a6a367262fa476753))
+- fix(desktop): retire prepend mode on every reader wheel ([#2913](https://github.com/block/buzz/pull/2913)) ([`07d0265cf`](https://github.com/block/buzz/commit/07d0265cfc212ef02e1c26153bf58ff46ce5ffe6))
+- fix(desktop): consolidate prepend scroll correction ([#2855](https://github.com/block/buzz/pull/2855)) ([`25e7864b3`](https://github.com/block/buzz/commit/25e7864b35f4dfd1c0ff31304a38555230a85f8d))
+- fix(desktop): track concurrent agent turns up to the harness maximum ([#2882](https://github.com/block/buzz/pull/2882)) ([`20bff5910`](https://github.com/block/buzz/commit/20bff591023daffc5ee1032cff02b54b75da3567))
+- fix(relay): preserve reconnect backoff ([#2759](https://github.com/block/buzz/pull/2759)) ([`499c5d349`](https://github.com/block/buzz/commit/499c5d349dab13bc906b1af5fe1fcb09ce2afa81))
+- refactor(relay): expose reconnect timing policy ([#2310](https://github.com/block/buzz/pull/2310)) ([`2f0041595`](https://github.com/block/buzz/commit/2f0041595d72529c06885680d2bd07ddb6a0beb4))
+- fix(desktop): clear stale working badges on agent stop/restart ([#2803](https://github.com/block/buzz/pull/2803)) ([`a64cc71f6`](https://github.com/block/buzz/commit/a64cc71f6c1605279b1a6fbd0fe904a2984cbdb0))
+- fix(desktop): surface agent rename relay profile sync failure as a warning toast ([#2279](https://github.com/block/buzz/pull/2279)) ([`5e3d2e484`](https://github.com/block/buzz/commit/5e3d2e4849c0f2512330801d804fb96f4ab72d28))
+- fix(discovery): inject PATH into Codex adapter planning ([#2767](https://github.com/block/buzz/pull/2767)) ([`6ab3835f3`](https://github.com/block/buzz/commit/6ab3835f3fe89ee215819fe8d193463c0ae7472b))
+
+
 ## v0.4.26
 
 - Style mobile pairing QR codes ([#2775](https://github.com/block/buzz/pull/2775)) ([`50655ac09`](https://github.com/block/buzz/commit/50655ac097fbf1a7db1a5284dccc7e2a0b0f1bfc))
diff --git a/Dockerfile b/Dockerfile
index 661be6c3a..d883ac6b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,6 +59,9 @@ RUN apt-get update \
         ca-certificates \
         git \
     && rm -rf /var/lib/apt/lists/*
+# Keep enough DWARF for native profilers to resolve optimized code to source
+# locations. The normal runtime strips it below; runtime-debug retains it.
+ENV CARGO_PROFILE_RELEASE_DEBUG=line-tables-only
 COPY --from=planner /build/recipe.json recipe.json
 # Cook the full workspace recipe — relay deps include workspace siblings, so
 # scoping to -p buzz-relay misses transitive deps and re-builds them later.
@@ -66,8 +69,12 @@ RUN cargo chef cook --release --recipe-path recipe.json
 COPY . .
 RUN cargo build --release --locked -p buzz-relay --bin buzz-relay \
                                    -p buzz-admin --bin buzz-admin \
-                                   -p buzz-pair-relay --bin buzz-pair-relay \
-    && strip target/release/buzz-relay \
+                                   -p buzz-pair-relay --bin buzz-pair-relay
+
+# Derive the normal release binaries from the same optimized ELF files as the
+# debug image so the two variants cannot drift at code-generation time.
+FROM builder AS stripped-binaries
+RUN strip target/release/buzz-relay \
     && strip target/release/buzz-admin \
     && strip target/release/buzz-pair-relay
 
@@ -111,8 +118,8 @@ COPY web/ web/
 COPY admin-web/ admin-web/
 RUN pnpm -C web build && pnpm -C admin-web build
 
-# ─── Stage 5: runtime ───────────────────────────────────────────────────────
-FROM debian:${DEBIAN_VERSION}-slim AS runtime
+# ─── Stage 5: shared runtime ────────────────────────────────────────────────
+FROM debian:${DEBIAN_VERSION}-slim AS runtime-base
 
 # OCI annotations: required for GHCR to auto-link the image to this repo and
 # inherit its visibility. org.opencontainers.image.source is the load-bearing
@@ -135,9 +142,6 @@ RUN apt-get update \
     && useradd  --system --uid 1000 --gid 1000 --home-dir /var/lib/buzz \
                 --create-home --shell /usr/sbin/nologin buzz
 
-COPY --from=builder    /build/target/release/buzz-relay /usr/local/bin/buzz-relay
-COPY --from=builder    /build/target/release/buzz-admin /usr/local/bin/buzz-admin
-COPY --from=builder    /build/target/release/buzz-pair-relay /usr/local/bin/buzz-pair-relay
 COPY --from=web-builder /build/web/dist                 /srv/buzz/web
 COPY --from=web-builder /build/admin-web/dist           /srv/buzz/admin-web
 
@@ -157,3 +161,18 @@ USER buzz:buzz
 WORKDIR /var/lib/buzz
 
 ENTRYPOINT ["/usr/local/bin/buzz-relay"]
+
+# Optimized binaries with line-table debug information for native profiling.
+# Published under debug-* tags; runtime behavior otherwise matches the normal
+# image exactly.
+FROM runtime-base AS runtime-debug
+COPY --from=builder /build/target/release/buzz-relay /usr/local/bin/buzz-relay
+COPY --from=builder /build/target/release/buzz-admin /usr/local/bin/buzz-admin
+COPY --from=builder /build/target/release/buzz-pair-relay /usr/local/bin/buzz-pair-relay
+
+# Keep the stripped runtime as the final/default Dockerfile target so existing
+# `docker build .` callers and release tags retain their current behavior.
+FROM runtime-base AS runtime
+COPY --from=stripped-binaries /build/target/release/buzz-relay /usr/local/bin/buzz-relay
+COPY --from=stripped-binaries /build/target/release/buzz-admin /usr/local/bin/buzz-admin
+COPY --from=stripped-binaries /build/target/release/buzz-pair-relay /usr/local/bin/buzz-pair-relay
diff --git a/RELEASING.md b/RELEASING.md
index 9785122aa..063b813e2 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -57,10 +57,13 @@ or mobile GitHub Release.
 2. **Merge the PR.** `auto-tag-on-release-pr-merge` pushes
    `relay-v<version>`.
 3. **The tag triggers `docker.yml`.** Stable releases update the version
-   aliases and `latest`; prereleases do not.
+   aliases and `latest`; prereleases do not. Each release also publishes an
+   optimized, symbol-bearing image under matching `debug-` tags (for example,
+   `debug-0.3.0` and `debug-latest`) for native profiling. The ordinary tags
+   remain stripped and are the default for deployments that do not need it.
 
 Every push to `main` continues to publish the rolling relay `:main` and
-`:sha-<7>` tags.
+`:sha-<7>` tags, plus matching `:debug-main` and `:debug-sha-<7>` variants.
 
 ### Mobile
 
diff --git a/crates/buzz-acp/src/acp.rs b/crates/buzz-acp/src/acp.rs
index 49e4d6cce..c0147baf1 100644
--- a/crates/buzz-acp/src/acp.rs
+++ b/crates/buzz-acp/src/acp.rs
@@ -1854,7 +1854,8 @@ pub enum ModelSwitchMethod {
 
 /// Extract `configOptions` entries with `category == "model"` from a `session/new` result.
 ///
-/// Returns the raw JSON array entries. Each entry has `configId`, `displayName`,
+/// Returns the raw JSON array entries. Each entry has `configId` (spelled `id`
+/// by some adapters, e.g. claude-agent-acp), `displayName`,
 /// `options: [{ value, displayName }]`, etc.
 pub fn extract_model_config_options(result: &serde_json::Value) -> Vec<serde_json::Value> {
     result["configOptions"]
@@ -1888,7 +1889,14 @@ pub fn resolve_model_switch_method(
     // 1. Search stable configOptions for a "model"-category entry whose
     //    options contain a value matching desired_model.
     for config_opt in extract_model_config_options(session_new_result) {
-        let config_id = match config_opt.get("configId").and_then(|v| v.as_str()) {
+        // Adapters disagree on the key: the ACP spec says `configId`, but
+        // claude-agent-acp emits `id`. Accept both; the set request always
+        // uses `configId` on the wire.
+        let config_id = match config_opt
+            .get("configId")
+            .or_else(|| config_opt.get("id"))
+            .and_then(|v| v.as_str())
+        {
             Some(id) => id,
             None => continue,
         };
@@ -2464,6 +2472,36 @@ mod tests {
         );
     }
 
+    #[test]
+    fn resolve_accepts_id_keyed_config_options() {
+        // claude-agent-acp (observed on v0.61.0) keys config options with
+        // `id` instead of the spec's `configId`. Payload mirrors its real
+        // `session/new` response.
+        let result = serde_json::json!({
+            "configOptions": [{
+                "id": "model",
+                "name": "Model",
+                "category": "model",
+                "type": "select",
+                "currentValue": "default",
+                "options": [
+                    { "value": "default", "name": "Default" },
+                    { "value": "opus[1m]", "name": "Opus" },
+                    { "value": "sonnet", "name": "Sonnet" }
+                ]
+            }],
+            "models": null
+        });
+        let method = super::resolve_model_switch_method(&result, "opus[1m]");
+        assert_eq!(
+            method,
+            Some(super::ModelSwitchMethod::ConfigOption {
+                config_id: "model".to_string(),
+                option_value: "opus[1m]".to_string(),
+            })
+        );
+    }
+
     #[test]
     fn resolve_falls_back_to_unstable() {
         let result = serde_json::json!({
diff --git a/crates/buzz-relay/Cargo.toml b/crates/buzz-relay/Cargo.toml
index 10a83f032..01f78a2d4 100644
--- a/crates/buzz-relay/Cargo.toml
+++ b/crates/buzz-relay/Cargo.toml
@@ -92,3 +92,4 @@ reqwest = { workspace = true }
 tokio-tungstenite = { workspace = true }
 futures = "0.3"
 flate2 = "1.1.9"
+opentelemetry_sdk = { workspace = true, features = ["testing"] }
diff --git a/crates/buzz-relay/src/config.rs b/crates/buzz-relay/src/config.rs
index 47030dcf3..a1691349d 100644
--- a/crates/buzz-relay/src/config.rs
+++ b/crates/buzz-relay/src/config.rs
@@ -64,6 +64,14 @@ pub struct Config {
     /// pod is only 4 — small enough that rate-limit checks, presence, and
     /// pub/sub publishes queue behind each other under load.
     pub redis_pool_size: usize,
+    /// Maximum connections in the Postgres writer/reader pools. Defaults to 50.
+    ///
+    /// The `buzz-db` default of 20 was sized for a handful of pods against
+    /// `max_connections=100`. Against Aurora (~5,000 connections) that cap
+    /// is the binding constraint: a burst of concurrent handlers exhausts
+    /// the per-pod pool and requests fail on acquire timeout while the
+    /// database sits idle.
+    pub db_pool_size: u32,
     /// Public WebSocket URL of this relay, advertised in NIP-11.
     pub relay_url: String,
     /// Public WebSocket URL of the dedicated device-pairing relay, when configured.
@@ -424,6 +432,12 @@ impl Config {
             .filter(|&v| v > 0)
             .unwrap_or(16);
 
+        let db_pool_size = std::env::var("BUZZ_DB_POOL_SIZE")
+            .ok()
+            .and_then(|v| v.parse::<u32>().ok())
+            .filter(|&v| v > 0)
+            .unwrap_or(50);
+
         let relay_url =
             std::env::var("RELAY_URL").unwrap_or_else(|_| "ws://localhost:3000".to_string());
 
@@ -875,6 +889,7 @@ impl Config {
             read_database_url,
             redis_url,
             redis_pool_size,
+            db_pool_size,
             relay_url,
             pairing_relay_url,
             max_connections,
@@ -942,6 +957,7 @@ mod tests {
         assert!(!config.database_url.is_empty());
         assert!(!config.redis_url.is_empty());
         assert_eq!(config.redis_pool_size, 16);
+        assert_eq!(config.db_pool_size, 50);
         assert!(config.max_connections > 0);
         assert!(config.send_buffer_size > 0);
         assert_eq!(config.max_frame_bytes, DEFAULT_MAX_FRAME_BYTES);
@@ -1009,6 +1025,31 @@ mod tests {
         assert_eq!(junk, 16, "unparsable value must fall back to the default");
     }
 
+    #[test]
+    fn db_pool_size_env_override_and_invalid_fallback() {
+        let _guard = ENV_MUTEX.lock().unwrap();
+        let previous = std::env::var_os("BUZZ_DB_POOL_SIZE");
+
+        std::env::set_var("BUZZ_DB_POOL_SIZE", "80");
+        let overridden = Config::from_env().expect("config").db_pool_size;
+
+        std::env::set_var("BUZZ_DB_POOL_SIZE", "0");
+        let zero = Config::from_env().expect("config").db_pool_size;
+
+        std::env::set_var("BUZZ_DB_POOL_SIZE", "not-a-number");
+        let junk = Config::from_env().expect("config").db_pool_size;
+
+        if let Some(value) = previous {
+            std::env::set_var("BUZZ_DB_POOL_SIZE", value);
+        } else {
+            std::env::remove_var("BUZZ_DB_POOL_SIZE");
+        }
+
+        assert_eq!(overridden, 80);
+        assert_eq!(zero, 50, "zero must fall back to the default");
+        assert_eq!(junk, 50, "unparsable value must fall back to the default");
+    }
+
     #[test]
     fn read_database_url_unset_or_blank_is_none() {
         let _guard = ENV_MUTEX.lock().unwrap();
diff --git a/crates/buzz-relay/src/main.rs b/crates/buzz-relay/src/main.rs
index 533428a4e..3ed820d3c 100644
--- a/crates/buzz-relay/src/main.rs
+++ b/crates/buzz-relay/src/main.rs
@@ -4,6 +4,10 @@ use std::sync::Arc;
 
 use tracing::{error, info, warn};
 use tracing_subscriber::{fmt, prelude::*, EnvFilter};
+
+fn log_env_filter(rust_log: Option<&str>) -> EnvFilter {
+    EnvFilter::new(rust_log.unwrap_or("buzz_relay=info"))
+}
 use uuid::Uuid;
 
 use buzz_audit::AuditService;
@@ -107,9 +111,17 @@ async fn main() -> anyhow::Result<()> {
     };
 
     tracing_subscriber::registry()
-        .with(fmt::layer().json().flatten_event(true))
-        .with(EnvFilter::from_default_env().add_directive("buzz_relay=info".parse()?))
-        .with(otel_layer)
+        .with(
+            fmt::layer()
+                .json()
+                .flatten_event(true)
+                .with_filter(log_env_filter(std::env::var("RUST_LOG").ok().as_deref())),
+        )
+        .with(otel_layer.map(|layer| {
+            layer.with_filter(telemetry::otel_env_filter(
+                std::env::var("BUZZ_OTEL_FILTER").ok().as_deref(),
+            ))
+        }))
         .init();
 
     // Log any exporter-build failure now that the subscriber is installed.
@@ -146,6 +158,7 @@ async fn main() -> anyhow::Result<()> {
     let db_config = DbConfig {
         database_url: config.database_url.clone(),
         read_database_url: config.read_database_url.clone(),
+        max_connections: config.db_pool_size,
         ..DbConfig::default()
     };
     let db = Db::new(&db_config).await.map_err(|e| {
@@ -1060,6 +1073,52 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
+#[cfg(test)]
+mod env_filter_tests {
+    use super::log_env_filter;
+    use buzz_relay::telemetry::otel_env_filter;
+    use tracing_subscriber::prelude::*;
+
+    #[test]
+    fn unset_enables_datastore_only_for_otel_filter() {
+        let logs = tracing_subscriber::registry().with(log_env_filter(None));
+        tracing::subscriber::with_default(logs, || {
+            assert!(!tracing::enabled!(target: "buzz_datastore", tracing::Level::INFO));
+            assert!(tracing::enabled!(target: "buzz_relay", tracing::Level::INFO));
+        });
+
+        let otel = tracing_subscriber::registry().with(otel_env_filter(None));
+        tracing::subscriber::with_default(otel, || {
+            assert!(tracing::enabled!(target: "buzz_datastore", tracing::Level::INFO));
+        });
+    }
+
+    #[test]
+    fn explicit_datastore_off_is_preserved_alone() {
+        assert_eq!(
+            otel_env_filter(Some("buzz_datastore=off")).to_string(),
+            "buzz_datastore=off"
+        );
+    }
+
+    #[test]
+    fn explicit_datastore_debug_is_preserved_alone() {
+        assert_eq!(
+            otel_env_filter(Some("buzz_datastore=debug")).to_string(),
+            "buzz_datastore=debug"
+        );
+    }
+
+    #[test]
+    fn log_and_otel_filters_are_configured_independently() {
+        assert_eq!(log_env_filter(Some("warn")).to_string(), "warn");
+        assert_eq!(
+            otel_env_filter(Some("buzz_relay=debug")).to_string(),
+            "buzz_relay=debug"
+        );
+    }
+}
+
 async fn run_community_revalidator(
     state: Arc<AppState>,
     period: std::time::Duration,
diff --git a/crates/buzz-relay/src/router.rs b/crates/buzz-relay/src/router.rs
index 2af036079..400ed1dfe 100644
--- a/crates/buzz-relay/src/router.rs
+++ b/crates/buzz-relay/src/router.rs
@@ -4,8 +4,9 @@ use std::sync::atomic::Ordering;
 use std::sync::Arc;
 
 use axum::{
+    body::Body,
     extract::{ConnectInfo, FromRequest, State, WebSocketUpgrade},
-    http::{HeaderMap, StatusCode},
+    http::{HeaderMap, Request, StatusCode},
     middleware,
     response::{IntoResponse, Json},
     routing::{get, post, put},
@@ -16,7 +17,7 @@ use tower::ServiceExt;
 use tower_http::cors::{AllowOrigin, CorsLayer};
 use tower_http::limit::RequestBodyLimitLayer;
 use tower_http::services::ServeDir;
-use tower_http::trace::TraceLayer;
+use tower_http::trace::{HttpMakeClassifier, TraceLayer};
 
 use crate::api;
 use crate::audio;
@@ -187,10 +188,23 @@ pub fn build_router(state: Arc<AppState>) -> Router {
 
     merged
         .layer(middleware::from_fn(track_metrics))
-        .layer(TraceLayer::new_for_http())
+        .layer(http_trace_layer())
         .layer(build_cors_layer(&state.config.cors_origins))
 }
 
+fn http_trace_layer() -> TraceLayer<HttpMakeClassifier, fn(&Request<Body>) -> tracing::Span> {
+    TraceLayer::new_for_http().make_span_with(make_http_span as fn(&Request<Body>) -> tracing::Span)
+}
+
+fn make_http_span(request: &Request<Body>) -> tracing::Span {
+    tracing::info_span!(
+        target: "buzz_relay",
+        "http.request",
+        otel.kind = "server",
+        http.request.method = %request.method(),
+    )
+}
+
 fn is_admin_spa_path(path: &str) -> bool {
     path == "/"
         || path == "/reports"
@@ -435,9 +449,14 @@ fn build_cors_layer(cors_origins: &[String]) -> CorsLayer {
 mod tests {
     use axum::{routing::get, Router};
     use futures_util::SinkExt;
+    use opentelemetry::trace::TracerProvider as _;
+    use opentelemetry_sdk::trace::{InMemorySpanExporter, SdkTracerProvider};
     use tokio::net::TcpListener;
     use tokio::sync::mpsc;
     use tokio_tungstenite::{connect_async, tungstenite::Message};
+    use tower::ServiceBuilder;
+    use tracing::Instrument as _;
+    use tracing_subscriber::prelude::*;
 
     use super::*;
 
@@ -471,6 +490,60 @@ mod tests {
         assert!(!should_serve_spa("/arbitrary", true));
     }
 
+    #[tokio::test(flavor = "current_thread")]
+    async fn http_and_datastore_spans_are_exported_in_the_same_trace() {
+        let exporter = InMemorySpanExporter::default();
+        let provider = SdkTracerProvider::builder()
+            .with_simple_exporter(exporter.clone())
+            .build();
+        let subscriber = tracing_subscriber::registry().with(
+            tracing_opentelemetry::layer()
+                .with_tracer(provider.tracer("test"))
+                .with_filter(crate::telemetry::otel_env_filter(None)),
+        );
+        let _subscriber_guard = tracing::subscriber::set_default(subscriber);
+        let service = ServiceBuilder::new()
+            .layer(http_trace_layer())
+            .service(tower::service_fn(
+                |_: axum::http::Request<axum::body::Body>| async {
+                    async {}
+                        .instrument(tracing::info_span!(
+                            target: "buzz_datastore",
+                            "SELECT",
+                            otel.kind = "client",
+                            db.system.name = "postgresql",
+                        ))
+                        .await;
+                    Ok::<_, std::convert::Infallible>(axum::response::Response::new(
+                        axum::body::Body::empty(),
+                    ))
+                },
+            ));
+
+        service
+            .oneshot(
+                axum::http::Request::get("/")
+                    .body(axum::body::Body::empty())
+                    .unwrap(),
+            )
+            .await
+            .unwrap();
+
+        provider.force_flush().unwrap();
+        let spans = exporter.get_finished_spans().unwrap();
+        let http = spans
+            .iter()
+            .find(|span| span.name == "http.request")
+            .unwrap();
+        let datastore = spans.iter().find(|span| span.name == "SELECT").unwrap();
+
+        assert_eq!(
+            datastore.span_context.trace_id(),
+            http.span_context.trace_id()
+        );
+        assert_eq!(datastore.parent_span_id, http.span_context.span_id());
+    }
+
     async fn handler_receives_message_with_limit(limit: usize, size: usize) -> bool {
         let (received_tx, mut received_rx) = mpsc::unbounded_channel();
         let app = Router::new().route(
diff --git a/crates/buzz-relay/src/telemetry.rs b/crates/buzz-relay/src/telemetry.rs
index 8dd305cd4..11c6d0351 100644
--- a/crates/buzz-relay/src/telemetry.rs
+++ b/crates/buzz-relay/src/telemetry.rs
@@ -25,6 +25,16 @@
 
 use opentelemetry_otlp::ExporterBuildError;
 use opentelemetry_sdk::{resource::EnvResourceDetector, trace::SdkTracerProvider, Resource};
+use tracing_subscriber::EnvFilter;
+
+/// Build the filter for spans exported through OpenTelemetry.
+///
+/// This is intentionally independent from `RUST_LOG`: changing stdout log
+/// verbosity must not remove parent spans from exported traces. Set
+/// `BUZZ_OTEL_FILTER` to override the default targets.
+pub fn otel_env_filter(configured: Option<&str>) -> EnvFilter {
+    EnvFilter::new(configured.unwrap_or("buzz_relay=info,buzz_datastore=info"))
+}
 
 /// Build the OTEL [`Resource`] used by the trace provider.
 ///
diff --git a/desktop/package.json b/desktop/package.json
index 6726bfdca..adac095a4 100644
--- a/desktop/package.json
+++ b/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "buzz",
   "private": true,
-  "version": "0.4.26",
+  "version": "0.5.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/desktop/src-tauri/Cargo.lock b/desktop/src-tauri/Cargo.lock
index 074b8f739..66553ef59 100644
--- a/desktop/src-tauri/Cargo.lock
+++ b/desktop/src-tauri/Cargo.lock
@@ -1010,7 +1010,7 @@ dependencies = [
 
 [[package]]
 name = "buzz-desktop"
-version = "0.4.26"
+version = "0.5.0"
 dependencies = [
  "anyhow",
  "arboard",
diff --git a/desktop/src-tauri/Cargo.toml b/desktop/src-tauri/Cargo.toml
index d68954468..324218a49 100644
--- a/desktop/src-tauri/Cargo.toml
+++ b/desktop/src-tauri/Cargo.toml
@@ -2,7 +2,7 @@
 
 [package]
 name = "buzz-desktop"
-version = "0.4.26"
+version = "0.5.0"
 description = "Buzz desktop app"
 authors = ["you"]
 edition = "2021"
diff --git a/desktop/src-tauri/tauri.conf.json b/desktop/src-tauri/tauri.conf.json
index 07b721634..7a480c4c1 100644
--- a/desktop/src-tauri/tauri.conf.json
+++ b/desktop/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Buzz",
-  "version": "0.4.26",
+  "version": "0.5.0",
   "identifier": "xyz.block.buzz.app",
   "build": {
     "beforeDevCommand": {