diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4cc1a5ace..55aac5fe3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@
 
 ### Added
 - **One-click updates on every surface.** `codeburn update` updates the CLI, the menu bar app and the desktop app in one go. `--check` lists what is out of date, and `--json` gives a stable result for scripts. (#1740)
-- **The desktop app updates itself and its companions.** Click Update, then Restart; after the restart the CLI and the menu bar follow on their own. Replacing the app by hand does the same. (#1741)
+- **The desktop app updates itself and its companions.** Click Update: it downloads and restarts on its own, and after the restart the CLI and the menu bar follow. Replacing the app by hand does the same. (#1741)
 - **The menu bar update pill updates everything** through `codeburn update`, and checks every 6 hours. (#1742)
 - **The Windows tray updates the CLI** through `codeburn update`, for Store and installer installs. (#1743)
 - **Download links always point at the latest release.** (#1740)
diff --git a/app/renderer/i18n/catalogs/sessions.ts b/app/renderer/i18n/catalogs/sessions.ts
index 7e23cd289..7147520cf 100644
--- a/app/renderer/i18n/catalogs/sessions.ts
+++ b/app/renderer/i18n/catalogs/sessions.ts
@@ -70,7 +70,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': 'Days',
     'sessions.drawer.prsLabel': 'Pull requests',
     'sessions.drawer.branchesCaption': 'Git branch carried across turns (Claude sessions only).',
-    'sessions.drawer.prsCaption': 'A turn that touched several PRs counts toward each of them, so the rows can add up to more than the total.',
+    'sessions.drawer.prsCaption': 'A turn that touched several PRs is split evenly between them, so the rows add up to the total.',
     'sessions.drawer.notTiedToPr': 'Not tied to a specific PR: {amount}',
     'sessions.drawer.savedBaseline': 'Saved vs baseline: {amount}.',
     'sessions.drawer.savedBaselineNone': 'Saved vs baseline: none this session.',
@@ -151,7 +151,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': 'Jours',
     'sessions.drawer.prsLabel': 'Pull requests',
     'sessions.drawer.branchesCaption': 'Branche Git conservée entre les tours (sessions Claude uniquement).',
-    'sessions.drawer.prsCaption': "Un tour qui a touché plusieurs pull requests compte pour chacune d'elles, donc les lignes peuvent dépasser le total.",
+    'sessions.drawer.prsCaption': "Un tour qui a touché plusieurs pull requests est réparti à parts égales entre elles, donc les lignes s'additionnent au total.",
     'sessions.drawer.notTiedToPr': 'Non rattaché à une pull request spécifique : {amount}',
     'sessions.drawer.savedBaseline': 'Économisé par rapport à la référence : {amount}.',
     'sessions.drawer.savedBaselineNone': 'Économisé par rapport à la référence : aucune économie sur cette session.',
@@ -232,7 +232,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': '日付',
     'sessions.drawer.prsLabel': 'プルリクエスト',
     'sessions.drawer.branchesCaption': 'ターンをまたいで保持されたGitブランチ（Claudeセッションのみ）。',
-    'sessions.drawer.prsCaption': '複数のPRに関わったターンはそれぞれのPRにカウントされるため、各行の合計が総計を上回ることがあります。',
+    'sessions.drawer.prsCaption': '複数のPRに関わったターンは各PRに均等に配分されるため、各行の合計は総計と一致します。',
     'sessions.drawer.notTiedToPr': '特定のPRに紐づかない分: {amount}',
     'sessions.drawer.savedBaseline': 'ベースライン比の節約額: {amount}。',
     'sessions.drawer.savedBaselineNone': 'ベースライン比の節約額: このセッションではありません。',
@@ -313,7 +313,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': '날짜',
     'sessions.drawer.prsLabel': '풀 리퀘스트',
     'sessions.drawer.branchesCaption': '여러 턴에 걸쳐 유지된 Git 브랜치(Claude 세션만 해당).',
-    'sessions.drawer.prsCaption': '여러 PR에 걸친 턴은 각 PR에 모두 집계되므로 행의 합계가 총계보다 클 수 있습니다.',
+    'sessions.drawer.prsCaption': '여러 PR에 걸친 턴은 각 PR에 균등하게 나뉘므로 행의 합계가 총계와 같습니다.',
     'sessions.drawer.notTiedToPr': '특정 PR에 연결되지 않음: {amount}',
     'sessions.drawer.savedBaseline': '기준선 대비 절감액: {amount}.',
     'sessions.drawer.savedBaselineNone': '기준선 대비 절감액: 이 세션에서는 없습니다.',
@@ -394,7 +394,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': '日期',
     'sessions.drawer.prsLabel': '拉取请求',
     'sessions.drawer.branchesCaption': '跨回合保留的 Git 分支（仅限 Claude 会话）。',
-    'sessions.drawer.prsCaption': '涉及多个 PR 的回合会计入每一个 PR，因此各行加起来可能超过总数。',
+    'sessions.drawer.prsCaption': '涉及多个 PR 的回合会平均分摊到每一个 PR，因此各行加起来等于总数。',
     'sessions.drawer.notTiedToPr': '未关联到特定 PR：{amount}',
     'sessions.drawer.savedBaseline': '相比基准节省：{amount}。',
     'sessions.drawer.savedBaselineNone': '相比基准节省：本次会话无节省。',
@@ -475,7 +475,7 @@ export const sessions: SectionCatalog = {
     'sessions.drawer.daysLabel': '日期',
     'sessions.drawer.prsLabel': '拉取請求',
     'sessions.drawer.branchesCaption': '跨回合保留的 Git 分支（僅限 Claude 工作階段）。',
-    'sessions.drawer.prsCaption': '涉及多個 PR 的回合會計入每一個 PR，因此各行加總可能超過總數。',
+    'sessions.drawer.prsCaption': '涉及多個 PR 的回合會平均分攤到每一個 PR，因此各行加總等於總數。',
     'sessions.drawer.notTiedToPr': '未關聯到特定 PR：{amount}',
     'sessions.drawer.savedBaseline': '相較基準節省：{amount}。',
     'sessions.drawer.savedBaselineNone': '相較基準節省：本次工作階段無節省。',