FudeReviewPanelにreviewedなファイルの数を表示する

CLAUDE.md

@@ -42,10 +42,10 @@ All plugin code lives under `lua/fude/`. The plugin entry point is `plugin/fude.
   - **`ui/format.lua`** — Pure format/calculation functions with no state or vim API side effects: `calculate_float_dimensions`, `format_comments_for_display`, `normalize_check`, `format_check_status`, `deduplicate_checks`, `sort_checks`, `build_checks_summary`, `format_review_status`, `build_reviewers_list`, `build_reviewers_summary`, `calculate_overview_layout`, `calculate_comments_height`, `calculate_reply_window_dimensions`, `format_reply_comments_for_display`, `build_overview_left_lines`, `build_overview_right_lines`, `calculate_comment_browser_layout`, `format_comment_browser_list`, `format_comment_browser_thread`, `parse_markdown_line`, `build_highlighted_chunks`, `apply_markdown_highlight_to_line`, `normalize_newlines`. Purity is enforced by `scripts/check_purity.lua` (`make check-purity`).
   - **`ui/inline.lua`** — Inline (virt_lines) comment box rendering. `format_comments_for_inline(comments, format_date_fn, opts)` builds bordered comment boxes for use as `nvim_buf_set_extmark` `virt_lines`. Reads the current window's text width via `vim.api`/`vim.fn` to size boxes, which is why it lives outside the pure `ui/format.lua`.
   - **`ui/comment_browser.lua`** — 3-pane floating comment browser for `FudeReviewListComments`. Left pane: comment list (review + PR-level, time-descending), including local drafts via `merge_draft_entries` (existing entries get a `✎draft` marker; new line/suggest/issue drafts appear as `[draft]` rows). Selecting a `type="draft"` row: `line`/`suggest` jumps to the file (`<CR>`), `issue` focuses the lower pane (prefilled). Right upper: thread display (draft body preview for draft rows). Right lower: reply/edit/new comment input. Supports reply, edit, delete, new PR comment, jump to file, and refresh. Does not depend on Telescope.
-  - **`ui/sidepanel.lua`** — Toggleable sidebar showing Review Scope and Changed Files. Files default to a flat list (`sidepanel.file_tree = "flat"`); `"tree"` groups files by directory via `ui/sidepanel/tree.lua`. Pure functions: `format_scope_section`, `format_files_section`, `format_files_section_tree`, `build_sidepanel_content`, `resolve_entry_at_cursor`. Side-effect functions: `open`, `close`, `toggle`, `refresh`, `toggle_file_tree_mode`. Uses `nvim_open_win` with `split` for sidebar creation. Uses dedicated `fude_sidepanel` namespace for highlights (avoids `refresh_extmarks` clearing them on BufEnter). Auto-refreshes on scope change and reload. Keymaps: `<CR>` select/open, `<Tab>` toggle reviewed/viewed, `t` toggle flat/tree, `R` reload, `q` close.
+  - **`ui/sidepanel.lua`** — Toggleable sidebar showing Review Scope and Changed Files. Files default to a flat list (`sidepanel.file_tree = "flat"`); `"tree"` groups files by directory via `ui/sidepanel/tree.lua`. Pure functions: `format_scope_section`, `format_files_section(file_entries, width, format_path_fn, viewed_count)`, `format_files_section_tree(tree_entries, total_file_count, width, viewed_count)`, `build_sidepanel_content`, `resolve_entry_at_cursor`. The Files section header displays viewed/total count (e.g., "Files (Reviewed: 3/10)"). Side-effect functions: `open`, `close`, `toggle`, `refresh`, `toggle_file_tree_mode`. Uses `nvim_open_win` with `split` for sidebar creation. Uses dedicated `fude_sidepanel` namespace for highlights (avoids `refresh_extmarks` clearing them on BufEnter). Auto-refreshes on scope change and reload. Keymaps: `<CR>` select/open, `<Tab>` toggle reviewed/viewed, `t` toggle flat/tree, `R` reload, `q` close.
   - **`ui/sidepanel/tree.lua`** — Pure tree helpers for the sidepanel Files section: `build_tree`, `collapse_singleton_chains`, `compute_aggregate`, and `flatten_tree`.
   - **`ui/extmarks.lua`** — Extmark management: `flash_line`, `highlight_comment_lines`, `clear_comment_line_highlight`, `refresh_extmarks`, `clear_extmarks`, `clear_all_extmarks`. Uses lazy `require("fude.comments")` to avoid circular dependencies. `refresh_extmarks` also renders the `draft` indicator from `drafts.file_markers(rel_path)` (EOL virt_text, both virtualText and inline modes).
-- **`files.lua`** — Changed files display via Telescope picker, snacks.picker, or quickfix list. All pickers show diff preview and viewed state toggle via `<Tab>`. Shows GitHub viewed status for each file. Exports `apply_viewed_toggle(path, on_done)` as a picker-agnostic state mutator that invokes gh GraphQL mark/unmark, updates `state.viewed_files`, and calls `on_done` with the updated display fields; the Telescope adapter `toggle_viewed_in_telescope` and the snacks adapter `toggle_viewed_in_snacks(picker, item)` both delegate to it. `show()` routes to `show_telescope` / `show_snacks` / `show_quickfix` based on `config.opts.file_list_mode`; snacks falls back to quickfix when snacks.nvim is missing. Also exports `next_file()` / `prev_file()` for jumping between changed files (used by `:FudeReviewNextFile` / `:FudeReviewPrevFile`); both wrap around at the edges and fall back to the first/last entry when the current buffer is not part of the PR. The pure helper `find_adjacent_file_index(changed_files, current_path, direction)` computes the target index.
+- **`files.lua`** — Changed files display via Telescope picker, snacks.picker, or quickfix list. All pickers show diff preview and viewed state toggle via `<Tab>`. Shows GitHub viewed status for each file. Exports `apply_viewed_toggle(path, on_done)` as a picker-agnostic state mutator that invokes gh GraphQL mark/unmark, updates `state.viewed_files`, and calls `on_done` with the updated display fields; the Telescope adapter `toggle_viewed_in_telescope` and the snacks adapter `toggle_viewed_in_snacks(picker, item)` both delegate to it. `show()` routes to `show_telescope` / `show_snacks` / `show_quickfix` based on `config.opts.file_list_mode`; snacks falls back to quickfix when snacks.nvim is missing. Also exports `next_file()` / `prev_file()` for jumping between changed files (used by `:FudeReviewNextFile` / `:FudeReviewPrevFile`); both wrap around at the edges and fall back to the first/last entry when the current buffer is not part of the PR. The pure helpers `find_adjacent_file_index(changed_files, current_path, direction)` computes the target index; `count_viewed(viewed_files, changed_files)` counts files with VIEWED state (used by sidepanel header).
 - **`scope.lua`** — Review scope selection and navigation. Provides a Telescope picker (or `vim.ui.select` fallback) for choosing between full PR scope and individual commit scope, with commit index display (`[1/10]`) and current scope marker (`▶`). Supports next/prev scope navigation (`next_scope`/`prev_scope`), marking commits as reviewed via `<Tab>` in the Telescope picker (tracked locally in `state.reviewed_commits`), and statusline integration (`statusline()`). On commit scope: checks out the commit, fetches commit-specific changed files, updates gitsigns base to `sha^` (global), and refreshes the diff preview. On full PR scope: restores the original HEAD, re-fetches PR-wide changed files, and computes merge-base (per-buffer gitsigns base is applied via `GitSignsUpdate` autocmd in init.lua). Exports `apply_reviewed_toggle(sha)` as a picker-agnostic state mutator that toggles `state.reviewed_commits[sha]` and returns the updated display fields `{ is_reviewed, reviewed_icon, reviewed_hl }`; both the Telescope adapter `toggle_reviewed_in_telescope` and the snacks adapter `toggle_reviewed_in_snacks(picker, item)` delegate to it. `select_scope()` routes to `show_telescope` / `show_snacks` / `show_vim_select` based on `config.opts.file_list_mode`; snacks falls back to `vim.ui.select` when snacks.nvim is missing.
 - **`overview.lua`** — PR overview display: fetches extended PR info and issue-level comments, renders in a centered float with keymaps for commenting and refreshing.
 - **`completion/init.lua`** — Completion source for comment input buffers. Provides mention (`@user`), issue/PR (`#nnn`), and commit SHA completion candidates via `fetch_mentions`, `fetch_issues`, `fetch_commits`, with a 5-minute TTL cache. `build_commit_items(commit_entries)` is a pure helper that formats commit entries into completion items; `get_context(line_before_cursor)` parses the trigger character (`@`/`#`/sha prefix). Reads `state.pr_commits` (only) for commit completion freshness invalidation.

doc/fude.txt

@@ -347,7 +347,8 @@ Using lazy.nvim: >lua
 
     Files:~
       Lists all changed files in the current scope with status icons,
-      additions/deletions counts, and viewed state.
+      additions/deletions counts, and viewed state. The header shows
+      the viewed file count out of total (e.g., "Files (Reviewed: 3/10)").
 
     Keymaps (panel):~
       `<CR>`    Select scope entry or open file

lua/fude/files.lua

@@ -45,6 +45,21 @@ function M.comment_count_display(submitted, pending, outdated)
 	return "💬" .. total, hl
 end
 
+--- Count files with VIEWED state among changed files.
+--- @param viewed_files table<string, string>|nil { [path] = "VIEWED" | "UNVIEWED" | "DISMISSED" }
+--- @param changed_files table[] list of { path, ... }
+--- @return number
+function M.count_viewed(viewed_files, changed_files)
+	viewed_files = viewed_files or {}
+	local count = 0
+	for _, file in ipairs(changed_files) do
+		if viewed_files[file.path] == "VIEWED" then
+			count = count + 1
+		end
+	end
+	return count
+end
+
 --- Build normalized file entries from changed files list.
 --- @param changed_files table[] list of { path, status, additions, deletions, patch }
 --- @param repo_root string repository root directory

lua/fude/ui/sidepanel.lua

@@ -56,14 +56,16 @@ end
 --- @param file_entries table[] entries from files.build_file_entries
 --- @param width number available width in columns
 --- @param format_path_fn (fun(s: string): string|nil)|nil formats file path for display (nil = identity)
+--- @param viewed_count number count of files with VIEWED state
 --- @return string[] lines
 --- @return table[] highlights { { line_0idx, col_start, col_end, hl_group } }
 --- @return number entry_count number of file entries
-function M.format_files_section(file_entries, width, format_path_fn)
+function M.format_files_section(file_entries, width, format_path_fn, viewed_count)
 	format_path_fn = format_path_fn or function(p)
 		return p
 	end
-	local lines = { string.format(" Files (%d)", #file_entries), string.rep("─", width) }
+	viewed_count = viewed_count or 0
+	local lines = { string.format(" Files (Reviewed: %d/%d)", viewed_count, #file_entries), string.rep("─", width) }
 	local highlights = {
 		{ 0, 0, -1, "Title" },
 	}
@@ -99,11 +101,13 @@ end
 --- @param tree_entries table[] entries from ui.sidepanel.tree.flatten_tree
 --- @param total_file_count number total number of changed files
 --- @param width number available width in columns
+--- @param viewed_count number count of files with VIEWED state
 --- @return string[] lines
 --- @return table[] highlights { { line_0idx, col_start, col_end, hl_group } }
 --- @return number entry_count number of rendered tree entries
-function M.format_files_section_tree(tree_entries, total_file_count, width)
-	local lines = { string.format(" Files (%d)", total_file_count), string.rep("─", width) }
+function M.format_files_section_tree(tree_entries, total_file_count, width, viewed_count)
+	viewed_count = viewed_count or 0
+	local lines = { string.format(" Files (Reviewed: %d/%d)", viewed_count, total_file_count), string.rep("─", width) }
 	local highlights = {
 		{ 0, 0, -1, "Title" },
 	}
@@ -269,6 +273,7 @@ local function render(panel)
 	-- Build file entries (skip if repo root unavailable)
 	local repo_root = diff_mod.get_repo_root()
 	local file_entries = {}
+	local viewed_count = 0
 	if repo_root then
 		local viewed_sign = (config.opts.signs and config.opts.signs.viewed) or "✓"
 		local comment_counts = comments_data.build_file_comment_counts(state.comments, state.pending_comments)
@@ -280,6 +285,7 @@ local function render(panel)
 			viewed_sign,
 			comment_counts
 		)
+		viewed_count = files_mod.count_viewed(state.viewed_files, state.changed_files or {})
 	end
 
 	-- Format sections
@@ -291,9 +297,9 @@ local function render(panel)
 		local tree = tree_mod.build_tree(file_entries)
 		tree_mod.collapse_singleton_chains(tree)
 		tree_entries = tree_mod.flatten_tree(tree, state.viewed_files)
-		file_lines, file_hls, file_count = M.format_files_section_tree(tree_entries, #file_entries, width)
+		file_lines, file_hls, file_count = M.format_files_section_tree(tree_entries, #file_entries, width, viewed_count)
 	else
-		file_lines, file_hls, file_count = M.format_files_section(file_entries, width, config.format_path)
+		file_lines, file_hls, file_count = M.format_files_section(file_entries, width, config.format_path, viewed_count)
 	end
 
 	local lines, highlights, section_map =

tests/fude/files_spec.lua

@@ -268,6 +268,42 @@ describe("build_file_entries with comment_counts", function()
 	end)
 end)
 
+describe("count_viewed", function()
+	it("counts all VIEWED files", function()
+		local viewed = { ["a.lua"] = "VIEWED", ["b.lua"] = "VIEWED", ["c.lua"] = "VIEWED" }
+		local changed = { { path = "a.lua" }, { path = "b.lua" }, { path = "c.lua" } }
+		assert.are.equal(3, files.count_viewed(viewed, changed))
+	end)
+
+	it("counts only VIEWED, not UNVIEWED or DISMISSED", function()
+		local viewed = { ["a.lua"] = "VIEWED", ["b.lua"] = "UNVIEWED", ["c.lua"] = "DISMISSED" }
+		local changed = { { path = "a.lua" }, { path = "b.lua" }, { path = "c.lua" } }
+		assert.are.equal(1, files.count_viewed(viewed, changed))
+	end)
+
+	it("returns 0 when no files are VIEWED", function()
+		local viewed = { ["a.lua"] = "UNVIEWED", ["b.lua"] = "UNVIEWED" }
+		local changed = { { path = "a.lua" }, { path = "b.lua" } }
+		assert.are.equal(0, files.count_viewed(viewed, changed))
+	end)
+
+	it("returns 0 for empty changed_files", function()
+		local viewed = { ["a.lua"] = "VIEWED" }
+		assert.are.equal(0, files.count_viewed(viewed, {}))
+	end)
+
+	it("returns 0 when viewed_files is nil", function()
+		local changed = { { path = "a.lua" }, { path = "b.lua" } }
+		assert.are.equal(0, files.count_viewed(nil, changed))
+	end)
+
+	it("ignores paths in viewed_files not in changed_files", function()
+		local viewed = { ["a.lua"] = "VIEWED", ["x.lua"] = "VIEWED" }
+		local changed = { { path = "a.lua" }, { path = "b.lua" } }
+		assert.are.equal(1, files.count_viewed(viewed, changed))
+	end)
+end)
+
 describe("apply_viewed_toggle", function()
 	local config = require("fude.config")
 	local helpers = require("tests.helpers")