feat(git): bind gd to open-under-cursor in log and object views

lua/core/autocommands.lua

@@ -66,6 +66,18 @@ vim.api.nvim_create_autocmd({ "BufReadPost" }, {
     command = 'silent! normal! g`"zv',
 })
 
+vim.api.nvim_create_autocmd("BufWinEnter", {
+    desc = "Reset foldlevel to 0 when entering a diff window."
+        .. " Vim's partial diff-state restoration on buffer re-entry"
+        .. " (e.g. via <C-o>) doesn't re-apply foldlevel=0, so"
+        .. " foldlevelstart leaks through and folds appear open.",
+    callback = function()
+        if vim.wo.diff then
+            vim.wo.foldlevel = 0
+        end
+    end,
+})
+
 vim.api.nvim_create_autocmd("FileType", {
     pattern = { "c" },
     callback = function()

lua/git/log_view.lua

@@ -7,23 +7,32 @@ local LOG_FORMAT = "%h %ad {%an}%d %s"
 
 local cr = vim.api.nvim_replace_termcodes("<CR>", true, false, true)
 
+---@param buf integer
+---@return boolean opened
+local function open_under_cursor(buf)
+    local r = repo.resolve(buf)
+    -- Anchor past the leading graph chars (matches the leading sha column,
+    -- not any hex word that happens to appear later in the subject).
+    local sha = r
+        and vim.api.nvim_get_current_line():match("^[*|/\\_ ]*(%x%x%x%x%x%x%x+)")
+    if not sha then
+        return false
+    end
+    ---@cast r -nil
+    require("git.object").open(r, sha, { split = false })
+    return true
+end
+
 ---@param buf integer
 local function attach_dispatch(buf)
     vim.keymap.set("n", "<CR>", function()
-        local r = repo.resolve(buf)
-        -- Anchor past the leading graph chars (matches the leading sha column,
-        -- not any hex word that happens to appear later in the subject).
-        local sha = r
-            and vim.api
-                .nvim_get_current_line()
-                :match("^[*|/\\_ ]*(%x%x%x%x%x%x%x+)")
-        if sha then
-            ---@cast r -nil
-            require("git.object").open(r, sha, { split = false })
-        else
+        if not open_under_cursor(buf) then
             vim.api.nvim_feedkeys(cr, "n", false)
         end
     end, { buffer = buf, silent = true, desc = "Open commit" })
+    vim.keymap.set("n", "gd", function()
+        open_under_cursor(buf)
+    end, { buffer = buf, silent = true, desc = "Open commit" })
 end
 
 ---@param worktree string

lua/git/object.lua

@@ -150,6 +150,9 @@ function M.attach_dispatch(buf)
             vim.api.nvim_feedkeys(cr, "n", false)
         end
     end, { buffer = buf, silent = true, desc = "Open file at commit" })
+    vim.keymap.set("n", "gd", function()
+        M.open_under_cursor()
+    end, { buffer = buf, silent = true, desc = "Open file at commit" })
 end
 
 ---@param r ow.Git.Repo