feat(sidebar): show full details for truncated rows

Harvested from PR #2734 by @idling11 with reviewer fixes for row-source fidelity, row-authoritative hit testing, and display-width popover sizing.

Refs #2694.

Co-authored-by: idling11 <8055620+idling11@users.noreply.github.com>

docs/V0_9_0_EXECUTION_MAP.md

@@ -50,6 +50,7 @@ harvest/stewardship commits:
 | #2736 sub-agent model inheritance | Locally harvested with explicit-override and provider-shaping tests. | Tool-agent routing now inherits the parent runtime model instead of hard-coding `deepseek-v4-flash`, while explicit DeepSeek-style tool-agent overrides still win. The `reasoning_effort = off` fast lane is covered by strict OpenAI-like provider request-shaping tests. Credit @h3c-hexin; comment/close the original after the integration branch is public. |
 | #2737 configured `skills_dir` discovery | Locally harvested with explicit-config precedence. | The system prompt now unions workspace-discovered skills and configured `skills_dir` skills instead of treating the configured directory as a fallback. Explicit configured skills are inserted before global defaults so they are not lost behind a large global skill library. Credit @h3c-hexin; comment/close the original after the integration branch is public. |
 | #2738 dense tool-call transcript collapse | Locally harvested with expansion, cache-key, and safety fixes. | Successful read/search/list-style tool runs collapse by default once they cross the density threshold; failures, running cells, shell/exec, patch/write/edit/delete, diff preview, plan update, and review cells stay visible. Users can expand a group with Enter/Space/mouse and can set `tool_collapse = "compact" | "expanded" | "calm"`. Credit @idling11 and issue #2692; comment/close the original after the integration branch is public. |
+| #2734 sidebar detail popovers | Locally harvested as the mouse-hover slice for #2694. | Work/Tasks/Agents hover metadata now stores row hitboxes, compact display text, and full source text so truncated checklist items, task/turn ids, and sub-agent ids/progress expand into a bordered wrapping popover. The harvest fixes reviewer risks from the PR by treating row metadata as authoritative, sizing by display width instead of bytes, and keeping source text untruncated. `cargo test -p codewhale-tui --bin codewhale-tui --locked sidebar_hover -- --nocapture`, `... work_hover_text_preserves_full_checklist_item ...`, and `... subagent_hover_text_preserves_full_agent_id_and_progress ...` passed. Credit @idling11; keep #2694 open for keyboard access, richer Work/Tasks/Agents metadata, redaction expansion, and clipping/snapshot coverage. |
 | #2532 pending-input delivery-mode labels | Locally re-harvested for #2054. | Pending-input preview rows now label steer-pending, rejected-steer, and queued-follow-up delivery modes, and wrapped continuation rows align under the label. `cargo test -p codewhale-tui --bin codewhale-tui --locked pending_input_preview -- --nocapture` passed. Credit @cyq1017; #2054 remains open for cancel/edit-mode affordance clarity. |
 | #697/#1827 bounded auto-generated project context | Locally implemented from the stabilization audit. | When no project instructions exist, startup now writes `.codewhale/instructions.md` from the bounded Project Context Pack data instead of an unbounded summary/tree scan. The generated file avoids the dynamic `<project_context_pack>` marker when that setting is disabled, keeps later top-level folders visible, and omits noisy directory tails. `cargo test -p codewhale-tui --bin codewhale-tui --locked auto_generated_context_is_bounded_for_many_file_workspace -- --nocapture` and `cargo test -p codewhale-tui --bin codewhale-tui --locked project_context_pack -- --nocapture` passed. Credit reporters @NASLXTO and @wuxixing, plus earlier context-cap/startup work from @linzhiqin2003 and @merchloubna70-dot; leave #697/#1827 open pending real massive-repo/manual startup verification. |
 | #2636 project-context mtime cache | Defer direct merge; harvest only after cache key/signature is widened. | Must include constitution changes, auto-generated context deletion, canonical path equivalence, and overwrite detection before landing. |
@@ -138,6 +139,7 @@ v0.9 branch so the remaining Windows/manual checks are explicit.
 | #2730 canonical codewhale settings path | Mergeable | Already harvested as `9e15805f6`; follow-up reviewer assertion added locally. Comment/close original after integration branch is public, crediting @xyuai and issue #2664. |
 | #2732 pausable command lifecycle | Draft/mergeable | Defer; review flagged behavior changes. |
 | #2733 PlanArtifact UI | Mergeable | Locally harvested with richer schema, rendering, relay/fork-state propagation, and replay tests. Comment/close original after integration branch is public, crediting @idling11 and issue #2691; keep #2691 open only if additional PlanReview product work remains. |
+| #2734 sidebar detail popovers | Mergeable / locally harvested | Harvested the mouse-hover popover slice with row-source fixes and tests. Comment on the original after the integration branch is public, crediting @idling11; leave #2694 open for keyboard navigation and richer structured detail acceptance criteria. |
 | #2736 sub-agent model inheritance | Mergeable | Locally harvested with parent-model inheritance, explicit override coverage, and strict OpenAI-like `reasoning_effort = off` shaping coverage. Comment/close original after the integration branch is public, crediting @h3c-hexin. |
 | #2737 configured `skills_dir` discovery | Mergeable | Locally harvested with extra configured-before-global precedence tests. Comment/close original after the integration branch is public, crediting @h3c-hexin. |
 | #2738 dense tool-call transcript collapse | Mergeable / locally harvested | Harvested with normal rendering preserved, expansion wired through Enter/Space/mouse, compact default restored, full-detail index mapping preserved for Alt+V/copy-style paths, and revision keys mixed across hidden cells. Comment/close original after the integration branch is public, crediting @idling11 and issue #2692. |